Maybe I'm the only one who remembers the last console launch and how everybody, this forum included, believed the PS3 would be way more powerful and to the point - that MS wasted a great deal of money and silicon with EDRAM.
As it turns out, that small bit of EDRAM was a huge factor in enabling the 360 to do things and continue to compete at a high level.
selective memory maybe? as I remember it everyone here had no doubt that the cell would destroy anything in the cpu area, and no one really knew the Rsx but expected it to be up to the task. When the RSX started to get exposed the weakness of the Ps3 was clearly acknowledge by most here. And it didn't take long before people realized that the ps3 had not just one weakness but several. Hard to develop for, caused by bad development tools, divided memory pool, complex cpu and weak RSX.
The main difference between then and now is that the details of both machines are very much out in the open so the educated guessing is much better than last time. Afaik as we know neither machine hides a Weak gpu or has a seriously problems with development tools.
I am certain that there will be plenty of examples were the XBOne's hardware will shine but on paper and from what we have seen so far the ps4 is the performance king.
And just like it quickly became general knowledge that 3rd party games ran better on the 360 the same is happening now with the PS4 . People don't have to be able to see it, knowing it is enough to convince them when they have to choose. You don't pick the TV with the known worst picture quality even if you might not be able to notice it yourself, especially not if the other TV costs 25% more.