No I'm not. What makes you say that? But like I said, you've got it backwards. It's not that Ace's durability is bad, it's BB' strength that was too much. BB was very strong, it wasn't that Ace was weak. If that was Luffy, he might have very well lost there. Ace was commended for his having great basic fighting skills even without the Logia powers by one of BB's Nakama.You're confusing durability with stamina. Ace's durability is sh!t, Pre TS Luffy didn't have his neck come lose to getting broken when BB hit him.
And please tell me which one is more likely to break a neck.
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I can't believe you even thought of comparing those two attacks.
And another big reason why BB>Vergo is, like I said, that the strongest Yonko must be wary of someone for a strong reason. I really don't see how someone of that caliber would lose to Vergo, a VA.