At this point I dont think the performance delta (pure GPU TF) will define the "most powerful next-gen console" when there could be other things in play. We've seen that the Xbox One had ESRAM but with a weird setup so it never lived up to it's hype from Microsoft. We have also seen the Xbox One X being significantly more powerful than the PS4 Pro yet there are no titles that have showcased that delta. Sony realizes this which is why I think this time around, they're willing to give a deficit while focussing more on other features and (even more) on their first party titles.