Only subtle things to my knowledge have ever distinctly been called out as a PS3 limitation, TP specifically. One can't say definitively that it's holding us back, when we don't know what's in store for the future. Most of the reason I posted this was for comments like this. There's just too many unknowns, and not a whole lot has been said about it. PS3 may not hold 4.0+ back for all we know - it's just pure speculation.
EDIT: I'm not defending PS3, I'm just trying to be a voice of reason.
