Gunblade

[Firon]

They had some form of gunblade (Kadaj and his gang) And Cloud killing Sephiroth was a copy and paste (albeit CGI not 90s pixely) of how he killed him ingame Omnislash if Cloud never had that limit he would never be able to kill Sephiroth (seriously if you don't have it at the end of the game it gives you it just to kill him with)

It was onmislash V2 cause apparently seph didn't even know what that attack was. Pretty sure the original was like 15 hits or something.

Edit: Also cloud after rewatching the fight cloud tries to onmislash and seph blocks it all.