Back in my PS2 days I always considered the 3 platformer-ish games in this order:
Ratchet>Jak>Sly
I have never played Sly though so that was an unsubstantiated claim on my part
Platinums: Red Dead Redemption, Killzone 2, LittleBigPlanet, Terminator Salvation, Uncharted 1, inFamous Second Son, Rocket League