ULTROS!
People seem to like me because I am polite and I am rarely late. I like to eat ice cream and I really enjoy a nice pair of slacks.
Huh?
I had to spend a lot of time thinking on what to do in SMT3 because if I don't, I'll most likely die (like that Matador battle, ugh). Unlike in Persona 4, I don't need to fear as much on what action I'll do.
In a sense, Persona 3 and 4 is much more forgiving than SMT (that's on normal), so that's why it's considered "faster" IMO.