Bon Kurei > Crocodile > Buggy > Jinbe > Ivankov > Daz Bones > Inazuma
Lol, Luffy's still only 19 after the timskip. Gear Second can't take that much off, and he still has plenty of years even with Ivankov's technique too.
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Nio-chan and Ctes: http://img.imgcake.com/nio/Untitledpngyn.png
BroAndCharAndCtes: http://i.imgur.com/oBQfY.png