I meant luffy wud fight em similar to when he fought aokiji for robin. He knew he wud lose n yet he challenged
That doesn't work either. When they encountered Aokiji they were alone and there was no other alternative. Luffy stayed back and put Aokiji in a position where his honor would be stained if he went after the rest of the crew.
If some big name had shown up and given them a way out Luffy would have taken it. He did at SA,MF several times and in ID too.