heres my list strongest to weakest
1. Claude (strong silent type, survived a gunshot to the head in a cutscene, overall tough fucker)
2. CJ (stole a secret weapon from the US government and got away with it, defeated the US army, hood toughness)
3. Niko (war veteran, ptsd, commited warcrimes, tough, balkan retard stength)
4. Tervor (hes a tweaker so enhanced ablities and cant feel pain, powered by retard anger)
5. Michael (able beat up moggers more athletic than him, experienced robber, kinda insane, mid life crisis)
6. Franklin (typical black mogger, nothing much)
dunno about these other guys, the chinatown protagonist is between niko and trevor though