Luck has his thunder abilities and is very fast, but ultimately Asta is just plain faster. Throw in the fact that Asta’s got better destructive ability and that’s a wrap. Luck’s skills are all magic based which is not a good matchup for Asta’s abilities. Luck continues to get stronger but I don’t see the victor changing anytime soon due to how much quicker Asta tends to improve his abilities. Asta wins.
Luck has a lot of very impressive electrical abilities at his disposal. He can move with extreme speed and that will let him dodge all of Urbosa’s attacks. While she has a degree of resistance to thunder based attacks, Luck uses this to amp up his physical moves to which she will have no proper defense. Urbosa has a lot of attack power but it won’t matter if you can’t land a hit. Luck wins.