Coming from the perspective of maining this kit I've just kind of wondered. I feel like he's better than every kit in A tier and arguable top of A+. Landing all your melees during bone rush and then kicking at the end isn't easy to do perfectly but it's definitely not as difficult as playing spider optimally and you take an unfair amount of damage and get launched far enough away to where the horse can kite to get bone rush again. I get it's a useless kit without a key cooldown playing reactively with skeletal horse I don't see how it's not a higher tier kit. It's sort of the horse's game to lose in a way. You miss the kick somehow or waste your bone rush and you just die but the thing is if you have half of a braincell you're going to hit it a lot more than not. I feel like the only kits I truly lose against are creeper and enderman. If you think cow or witch is better than horse you're on something man idk. I think it's low S tier.