Ace is straight fodder to anyone with the weakest armament and a physical fighting style post time skip.
Bb broke aces neck and dominated him physically on that island. This is a fact.
Impel down luffy completely dominated bb in physicals in their clash.
Speed gets shitted on by even the octopus in fishman island meaning anyone and I mean anyone able to move faster than pre ts luffy would destroy
1-BB didn't break Ace's neck.
2-Ace had a bounty of 550million berry.
3-He was a Yonko Commander,so he is feared in the new world.
4-He had good coa,coo and coc. He also put the mera mera no mi into good use.
5-He fought Jinbei to a stalemate for a couple of days,so his endurance is legit.
6-BlackBeard wanted him to join his crew.So he recognized his strength,even if you don't.
7-He was the son of the Pirate King Gold Roger. Whitebeard saw the potential in him and took him under his wing.
8-His devil fruit alone brought warriors from all over the world to fight at the corrida colosseum .So his powers were no joke.
9-He unlocked COC when he was only a child and defeated a seasoned pirate when he was only a kid.
10-World Government recognized the strength of Spade pirates and invited Ace into the Warlords ranks.
11-Fought evenly with Yamato,who also unlocked COC when she was a little kid too.
12-Ace perfectly countered Aokiji's attack.He didn't fear shit and died protecting his brother.
13-WG had him executed out of fear of his potential growth into a PK level fighter.
14-WhiteBeard Pirates were willing to die for him.Whitebeard died for him.
15-Ace was the goat of his generation of pirates.