bodied shiki
killed whitebeard
killed roger
killed roger off-spring
snitch shanks
Lab rat Kaido
you sure about that?
Shiki who went to Marineford on his own and alone killed many marines and was captured after a tough battle and he escaped and got away free after two years.
Failed to beat and kill Whitebeard who was killed by Blackbeard and his crew, while the immense majority of his crew and allies got away.
Failed to capture Roger repetively and only managed to imprison him because Roger delivered himself to the Navy and wanted to die on his terms, while all of Roger's crewmates got away free.
Only captured Kaido alone and without his crew because Kaido was so desesperate to die, and were always unable to stop him from escaping or to excute him.
Failed to capture Chinjao and the Supernovas despite them having been defeated, let Bonney and the Caribou Pirates escape without any injury.
Failed to capture Doflamingo and his crew multiple times.
Failed to beat and capture Rayleigh.
Yes I am very sure.