this makes no sense
strawhat would have died if kuma didn't help rayleigh he did save boa but gaban also saved robin
garp had colby who wasn't a hostage hes a grown aman who is at least vice admiral level and shiryu knew garp would take the bait
whitebeard couldn't save anyone either he had a whole crew and luffy had to help him stop ace death he wasn't ever put in a situation he had to surrender
also gaban got stabbed 3 times completely helpless due to his son who was already had a arrow by his neck inches the rest only got stabbed once