Interesting post. As someone who recently shopped pretty much all mid and full size trucks, I will share my 2 cents as well for anyone interested. Just this week, after months of research and test driving, I purchased a 2016 Ram 1500. My search led me to the Ridgeline and the Ram, and ultimately the Ram was too good to pass up.
I was considering an RTS or RTL Ridgeline with AWD. Those trucks are getting off the lot for right around MSRP of $34-36k. The truck I purchased is a Ram 1500 Express Quad Cab Black Edition with the popular tech package and several other additional features. MSRP of $45k and I got out the door for just $31k. Manufacturer rebates and discounts for full size trucks are absolutely amazing and make these vehicles tremendous value buys.
Here are my thoughts on the 2017 Ridgeline vs the 2016 Ram 1500 using the same format as OP, plus an extra category for fuel economy. And just for background info, I do not plan on towing much right now (at least nothing the RL couldn't handle) but I do frequently need to haul quite a bit in the bed. I also commute 30 miles each way to work and back 5 days a week, mostly highway with some traffic.
1. Handling: I will start with the Ridgeline... it feels like driving a crossover, plain and simple. Feels nimble and doesn't roll much. The acceleration is just fine except when using econ mode, then it is almost painful. The steering wheel feel is average. The Ram 1500 is easily the best handling full size truck available, and I would say it is on par or better than all midsize as well. It has the usual body-on-frame truck skipping/bumping on occasion, but that is to be expected. The steering wheel feels better and not as loose. Winner: Tie
2. Comfort: The Ridgeline has more adjusting options for front seating whereas my Ram is simply front/back and recline. I found my feet a bit more comfortable on the Ridgeline after adjusting everything to my liking, but not by much. Where the Ram 1500 really shines is size. there is so much more space and the center console/armrest is much more comfortable. I also prefer the cushion and support of the Ram's seats over the RL. The backseats are almost identical. I bought a quad cab Ram and according to ratings it has just 1" less leg space in the back compared to the RL, but the rear doors also open much wider making it easier to load in/out and the seats fold up just like the RL. Add in that you can see much more of the road and your surroundings and the Ram starts to win here by a wide margin. Winner: Ram 1500
3. Parking: Surprisingly the Ridgeline really doesn't shine here and I think the seating position and how you are sort of seated down inside the truck is the main reason. The Ram 1500 is a wider, longer and much taller truck, but it doesn't feel like it when parking. In the Ram I can see my surroundings better and the backup camera functions just as well as the Ridgeline's. Ultimately this comes down to vision, and the Ram has the advantage despite being a larger truck. Winner: Ram 1500
4. Truck bed: This is the easiest call... the Ram 1500 wins. It has a much larger bed and a locking tailgate. The in-bed trunk on the Ridgeline is neat, but I don't ever feel a true need for it. Same with the swinging tailgate. Winner: Ram 1500
5. Electronics: The Ram 1500 offers all of the same electronic features as the Ridgeline. There really isn't much difference at all other than how things look and the systems installed. Winner: Tie
6. Towing and payload: The Ram 1500 offers close to double the towing and more hauling capability. This is of course no surprise as the Ridgeline brings up the rear in the midsize segment. The RL offers enough for me right now, but probably not for the years to come when I plan on purchasing some larger toys and a new boat. Winner: Ram 1500
7. Off road: My thinking here is similar to the original comparison with the F150... the Ridgeline would be better for light snow around the city, but the Ram will dominate all other conditions and heavier snow with a true 4x4 system with 4WD lock and low settings. Significantly better ground clearance (which was one of my biggest complaints with the RL) make this an easy choice. Winner: Ram 1500
8. Cost to buy and maintain: A lot is still unknown with the Ridgeline's maintenance, but it can be reasonably assumed that it will be cheaper to maintain than a full size 4x4 truck. As for purchase price and value, the Ram 1500 wins. Honda clearly has a different strategy with the Ridgeline, and that is fine, but you really cannot beat the value of a full size truck when you add in all of the manufacturer discounts and rebates. I got a bigger, more powerful, more comfortable truck with equal features for less money out the door. That should not be the case when comparing to a midsize. Winner: Tie
9. Fuel Economy: The Ridgeline is rated better, but all reviews and reports suggest that you pretty much need to be in econ mode at all times to achieve the high ratings, which is a bummer because the econ mode is just not fun. Regardless, I cannot argue that the RL wins here. Both trucks run on regular gas, and in mixed driving the Ram averages around 18 mpg while the Ridgeline gets about 21. Winner: Ridgeline
In the end the Ram 1500 just made more sense. It is a more comfortable, larger, equally or better equipped truck that drives just as well as the SUV based Ridgeline. I got a better price for a superior vehicle in my opinion, and I get the benefits of a true 4x4 system with more ground clearance, higher towing and payload ratings. All of this while only sacrificing a couple mpg's, which was the Ridgeline's only advantage after weighing everything out... I spent a long time making this decision, doing research, test driving every truck out there. I really liked the Ridgeline for what it is and wouldn't rule out owning one some day. But going with the Ram 1500 was an easy decision in the end.
As for other trucks on the market, the Ridgeline is by far my favorite in the midsize class. I love the look of the Tacoma but just didn't feel entirely comfortable driving it. Plus it is just so expensive. The GMC twins and the Nissan Frontier were both eliminated quickly for me for various reasons. The Ram 1500, in my opinion, is the best truck money can buy right now, full size or midsize.