I think destiny would win cause vex time travel and could finish this war before it began(I don't think borderlands has that ability but I didn't play pre sequel). I also think we are forgetting that the cabal have conquer planets and destroy planets by just being in there way. Also I heard a theory that you can only damage atheon and crota because the guardians have light that's why in destiny there are called light level, And if you guys aren't happy about that which I know you guys and girls aren't because of borderland fandom ward of dawn and golden gun combo. Just my opinion