Another major factor for me, that I haven't discussed much:
I love the 360, don't get me wrong, but I can't even turn on my system without a loud, almost grinding hum. Sometimes it DOES grind, and I avoid using it (which is why my PS3 game list is over 60 while my 360 list is at 30, or so) and using the PS3 more often. my PS3 makes nary a sound, and runs perfectly, never glitching, freezing, grinding, or anything.
My Console Library:
PS5, Switch, XSX
PS4, PS3, PS2, PS1, WiiU, Wii, GCN, N64 SNES, XBO, 360
3DS, DS, GBA, Vita, PSP, Android