Yes, I know. That's why I mentioned it. I don't really agree with the rest of your post though.
They both had 512, but the PS3 was split vs the 360 with unified. When you say "and others too", yes some other devs had issues with the hardware as it was more complicated, but Bethesda was the only one that had prolonged issues. After a couple of years, everyone else had it figured out and there were games just as performance demanding (or more) than the Beth titles and they did just fine even with ports, but the best solution was not doing a port at all, but coding a game from the ground-up, side-by-side.
As BG said here...
I think it really hit it spot on, almost. We all know the size of the Beth dev team, it's not for a lack of effort but more so a greater focus on the other platforms first, second, third, fourth, and fifth...and around the 6th would be the PS3. Not a lack of effort, but a lack of enough resources (essentially manhours) to deal with it.
It's in the past and Sony did everyone a favor by going the more popular route this time. Even Todd Howard (or was it Pete Hines? I forget) mentioned it when the PS4 was announced ["Hooray for unified memory!]