@AdmiralYonkouMt.Bandit:
That doesn't matter. What should be going through Ace's head is struggling as much as possible, trying his best to get to crew/friends as fast as possible to lessen the deaths.
Sengoku or Garp being stronger than Ace should not matter to him at all. Times like these he should be more like Luffy and try to get shit done.
Garp isn't going to kill Ace if he struggles to get away. Sengoku will most likely just beat the shit out of him. Since for some reason he hasn't already killed Ace himself(for some reason something is holding him back).
IT DOES MATTER, WTH! … you should really stop watching Gay Porn Sites, it makes you emotional.
Ace in Zik's argument: * looks at Sengoku, Garp, 3 admirals and 10000+ marines*. WTH, I WILL ESCAPE, ESCAPE, I MUST ESCAPE!!! nobody dies in the manga in present time anyway, Jumps off the platform and tries to run to his WB and his allies.
Garp in Zik's argument: I wont kill you ace, GO… Go.... BE FREEEEEEEEEE~~~~
Sengoku in Zik's argument: Meh, run…run like the wind boy.... pokes finger in nose ... thinks...should I kill him or just leave him near dead like...hmmm... beats the shit out of Ace.
*If for some reason Ace gives him that reason not to hold back lets say by TRYING TO ESCAPE, Ace would be dead and all would have been for nothing now would it. Awww... Ace fans would be in tears.
but anyways
Bottom line, Oda decided that Ace should just do all those things for reasons we can only assume but cant conclude.