Look this dude aint stupid, he is a cold heart bastard, if Garp has an opening Shiru gona kill him
The thing swordmans lethality is on a totally different scale
Shiru to all we know had a role almost as important as an admiral (leader of the prison) = to Magellan which low diff BB and all the people there.
People are shitting on him cuz is a so call youko commander (but BB saw him differently - the guy has his own agenda)
And for what I care, every df power can be broken (look Kata shit....) Shiru awakening could potentialy being the most broken one and he is definitly a hakimonster cuz to be in charge of the prison without df this guy has to have adv haki in his arsenal
Lastly look what he is saying here: you re all rash and unprepared - this dude if is going to fight Garp will first let the other folder be done to study Garp then will act. In a way, sound like Mihawk - he aint rushing shit, but studying the opponent
Shiryu didnt give a dam about the buda which was in some way equal to garp