I really have to wonder how much people will pay for an upgrade that is barely an upgrade?
I can't speak for all overnight trains now sporting business class, as I've only ridden the Cardinal and Lakeshore Ltd with these cars. These are the same cars that still travel on the Vermonter and Empire Service trains to Buffalo. Just last week, I rode the Vermonter B/C and discovered the seats are closer together than the standard NEC Business Class Amfleet I cars. I've taken that train a fair number of times in B/C and never noticed how close the seats are. Because the passenger in front of me had fully reclined his seat, it was as cramped as standard NEC coach as I had to slide my laptop computer towards me to prevent the screen from being crushed/snapped off/broken as he reclined...exactly like NEC coach. Obviously, those seats recline further than Amfleet I coach seats. While the seats are a bit further apart than NEC coach, when fully reclined, there's no more room than Amfleet I coach. There's a leg rest in all the 2-1 B/C cars as well as the usual foot rest. Additionally, the '2' side seats have a nice padded armrest between seats (6" wide, I think) with two can/bottle holder depressions on the front of them. Thus, the seats on both sides of the aisle are the same width, with, perhaps, the extra 1" gap on the window side compared to the aisle-side seat. Actually, the seat gap to the window is noticeably wider than in all other Amfleet I and II cars I've ridden. Note that the '1' side seats do not have an armrest/can holder. Like all B/C tickets, there's free non-alcoholic beverages included. Bottom line? Unless one is traveling during heavy travel periods (holidays & winter to/from Florida), I think I'd prefer the regular Amfleet II coach seats on the hope that I could spread out across both seats, especially for sleeping.
And what about Wifi? As I discovered while riding the Coast Starlight last May, the Wifi is nothing more than a small hot spot box in the lounge car (no B/C car between sleepers and diner at that point) that uses cellphone connectivity to access the web. While traversing wilderness areas, there was no signal...just like cellphone. No surprise, really, but I wasn't expecting it to happen. FWIW, if you're more than 1 car away from the hot spot on a Superliner, your wifi connectivity is zero. Even in the adjacent Superliner in a lower level roomette, connectivity was poor and excruciatingly slow as a result. As for the Wifi in the B/C car on the Lakeshore, it's got good 'range' as it has a stronger transmitter. Amtrak had been using the lounge cars' 2-1 seating on train 448/449 for sleeping car passengers that met their sleeper at Albany/Renssaeller. Sitting 2 cars back, the Wifi worked just from BOS to SPG for me...even faster than 'under the wires' on the NEC.