An observation I've just made about XB1 being less powerful having played a few game demos on PS3 - although 900p et al are okay now, a few years down the line, devs are going to be pushing the resolutions lower to get more in. Same as PS3 getting blurry, stuttery games now. When games start rendering at 900p on PS4 and looking almost as good as 1080p according to DF, XB1 will be rendering 720p games. Suddenly it sounds really...weak sauce. 2018 games at 720p when sets are 1080p and 4k. I'd rather games dropped the pixel quality to keep IQ and framerate up, but they don't. So this points to actually shorter legs on the console. You'll get great games for a few years, then they'll really start to suffer. It depends how much compensation can be found with new techniques.
I'm tired of PS3's lack of IQ. I want an upgrade. I won't make the change yet as there aren't the games I want, but when it comes time, XB1 is definitely off the cards because it doesn't have gaming longevity IMO. Even if it came with swishy exclusives, if they look rough I'll lose interest. I wonder if that sentiment will be shared by the gaming populace? History suggests not, but the times they are a-changing, and people are more informed than ever while the libraries are so uniform.