The GIF is just SSB from N64. And there is even a Wii emulator for the pc that can run SSBB and SSBM. I don't mean to impose, but i thought people would appreciate the knowledge. Its called Dolphin Emulator if you're interested.
Let's say one falcon punch is represented by 1X; or just X as they are equivalent. If you take two falcon punches of equal force traveling together at the same speed; it is equal to X-X; which equals 0. It's like throwing a ball in the air and hitting another ball in mid-air; they just stop in mid air and fall to the ground. So there would be no explosions.
but what if and its just theoretical but if we divide X with X the anwser is 1 simple right?
but wht if X=1 that means if you divide nothing by nothing it will be something **** you math