ESRAM is significantly easier to use compared to cell. Nothing will overcome the pure spec difference though. It comes down to the games though. You would agree with me when I say that there were plenty of reasons people chose ps3 over xbox360 this gen right? Same goes for this gen. It's a bit hyperbolic to start preaching that xb1 games will be unplayable messes later this gen.
Oh no I don't really think they'll ever be an unplayable mess. I just think that it was a bit bone-headed to make a weaker system that's ALSO more complex. If anything, make a weaker system but make it incredibly easy to program for or a much stronger system that's harder to program for. There's very little incentive to figure out the ins and outs of a more complex architecture if you know that no matter how good you get at using the architecture, you're still going to run into power restraints.
Of course I'm thinking more of 2015-2016 and beyond. For the next two years devs will be focusing more on optimization than they will be on pushing boundaries.
At this point literally the ONLY reasons to get an XB1 beyond not wanting to leave Gamerscore or friend circles behind are exclusives, because if you're buying a multiplat game you're going to be paying more for less.
The trump card might be Live. If everything they're saying about their 300,000 servers and such pans out and Xbox Live gets better (rather than worse like some rumors), then they could still compete by saying "Yeah, the graphics are slightly weaker, but the gameplay is there. The multiplayer is there. If you care about the experience beyond just what you see on screen, it's there".
If, however, PS+ also becomes equal to or better than Xbox Live, it will be a perfect storm of higher price, weaker hardware, worse multiplats, and only the same or worse multiplayer.
Unfortunately everything beyond graphics is speculation at this point, and since graphics are a direct result of the system's power, there's a good chance that graphics disparity now will equate to gameplay and level design disparity later. Not gamebreaking or unplayable disparity the likes of Bayonetta, but disparity nonetheless.