Difference between a good kayle and a bad kayle is pretty noticeable. Its actually pretty hard to have an optimal ult, especially with teams that can both burst and execute well. You also need to know how to position, kite, and orbwalk to be a good kayle player, which takes some practice. Ever since yetti posted his guide I've seen an influx of kayles in 3s, but none of them have been too hard to deal with. That would probably change if queued against yetti though, since he seems to know what he's doing haha. Obviously there's much more to it than just those things, but they are a few important aspects.