Which of these cases of a boxer ducking another boxer is totally undeniable?

[Bushbaby]

So lets get this straight. Bradley ducked Khan, was promised a Pacman fight and (actually) got it. And it's considered a duck.

But Khan ducked Devon and was promised a Floyd fight in which he ended up pissing in the wind that was blowing back on him. But somehow Bradley ducked, but Khan did not.

Personally Bradley did duck Khan. But Khan did duck Devon. I don't see how Bradley is a duck but Khan isn't.

[Derranged]

Right down the pipe.

Well to give the poor lad credit, as I remember it, Bradley did pretty much refuse to fight Khan.