Question: What'd have happened if no other people were in Dressrosa when Gear Fourth timed out aside from Luffy and Doffy?
In that hypothetical scenario (since that's not what happened in the manga), I'm gonna say Doflamingo would try to kill Luffy..
Don't you agree?
Again luffy did not defeat doffy on his own that is what is in the manga I'm going to follow that because that is what I read not only law but violia and collosium Warriors and towns folk played part in doffy's demise as well
Luffy defeated Doffy when they actually went all out and fought with everything they had.. now of course it was never a 1v1 the whole time.. (trust me, I wish it was though.)
You feel the need to mention the fact that Luffy received help.. but so did Doflamingo... like a lot of help.. so I don't get why it's so hard for some of you guys to understand that it was never Doflamingo by himself against a whole bunch of people. It was an all out battle with many different fighters on both sides.. (three sides technically, if we include the Marines) and a lot of characters had skirmishes with different opponents throughout the arc.
Luffy wasn't by himself.. yes. This is true.
Doflamingo wasn't by himself either..