Well.... actually..... 
Nah, that sounds sucky... is it really that bad?
Back OT, I'm not sure what/who I would consider a celebrity so I wouldn't know if I have.... GrouchyBlackMan is probably the highest rated person I've been in-game with... and I've not seen him on the forums. That said, I've been sort of absent for a quite a while and only recently started commenting again so it could be that I've just not seen enough people around yet! 
If you like this game on XBox and consider that your main system/favorite controller, there's really zero reason to play it on PS3 except for the company of some of the fine folks here and met on PUGing adventures.
And I say that as someone who considers PS3 their primary (and original) "home" on this game. But having also played this on PC (which I consider a world of their own and, therefore, not something to compare with console experiences) and having just recently started this on an XBox, PS3 simply got the worst reproduction of the game.
Honestly, did not notice a gigantic difference in load screen times on PS3 vs XBox, IMO. However, I can fire up my XBox and play for an entire afternoon without 1) constantly rebuilding the lobby because of getting stuck on the "waiting for other players" screen, 2) constantly rebuilding the lobby because of needing to reboot after every 4th/5th game to avoid major framerate drops/potential freezes (and that's not always 100% surefire), 3) having to set the enemy for a Gold lobby and rotate the original three because of fear of Collectors freezing/bricking my system (so, goodbye U/U/G), and 4) haven't had any problems joining lobbies or people joining mine on XBox, whereas there are some people I can never connect to on PS3 and have to have a mutual friend host for us.
All that being said, I still love my PS3. It's my home, it's where my most unlocked manifest is, it's where all my old school OG friends are, and I flat-out think the controller is superior - for my hand comfort level. But you get less games completed in an afternoon than on XBox due to all those reasons above, largely the whole having-to-rebuild-the-lobby thing A LOT.