Fair enough, if you are going by your personal experience than sure. I am just basing this off the hardware and software situation. The WiiU could do everything the Wii did and more, same how the XB1 can do everything the OG Xbox could do and more, just like how a GTX2080 can do everything a GTX1080 can do and more. If the XB1 and WiiU weren't backwards compatibly than i might argue for there sake but considering they are, they are the same system with one being capable of a lot more.
I get where you're coming from; being able to play old games doesn't necessarily count for much depending on the individual is all I meant, some folks keep their old hardware to play its games or just aren't interested in playing old games.
I mean, for me the original Xbox is better cos I played games like Halo 1 & 2, Star Wars Battlefront, and Panzer Dragoon Orta on it. Theoretically I could play those on an Xbox One as well, but (a) why would I when I still have my original Xbox, and (b) if I'm buying a new system I'm only interested in what NEW games it brings to the table. Playing a game once it's old can never measure up to the excitement of playing it when its fresh and new.
True, some like the nostalgia of playing it the way it was at launched.
Just for arguments sake, not only can you play those same games you mentioned on the XB1, you will get quality of life improvements to them like VSync and Anisotropic filtering and possibly less slow downs and sharper visuals making the games a lot more polished and on top of that, you can play the new games like Halo 2 Anniversary and the new Battlefront games while also having access to a better version of the older games as well. If someone ask what console to buy, a Wii or WiiU and a OG Xbox or XB1, id tell them to get the WiiU and the XB1 as they are the same systems with only more options.
I play my PC all the time, sometimes i load up games made in 2010 and sometimes ill play something brand new. Having that option is incredible.