if robin was a static thing yes but after cut he begin to fall

god dammit thank you, I didn't want to go through the trouble to explain that, and your picture did it better than I could have.

Im not even a grammar nazi and this hurt me

But the speed lines seem to indicate that during this picture the hand is still going forward, which means that Robin shouldn't have started falling just yet.

As you can see in the gif someone posted below, when the guy has his sword still going forward, the falling piece hasn't started falling.

Then we can count in that Wolverine is a superhero and the speed of that swing is probably faster than the one of that obese not so strong man.

ITT: Overthinking

^He got it right

Don't you think robin's head would move to the left a bit because of the impact?

yes

cut = energy = move

Besides of this.... When have that .gif ever been relavant? o.o