the fact that he gets kited really easily helps keep him in check. his only gap closer is not nearly as reliable as some of comparable champions, has a much longer cooldown, and a shorter range. He also takes a long time to kill people, at the very least needing a q, aa, w'd aa, another aa and a q before getting to full stacks for his ult to do max damage. If the person he is fighting has a decent amount of armor and he doesn't have lw yet, its actually not that easy for him to kill people. very easy to finish people off, but he's nowhere near the level of jayce, jax, kha, rengar for sheer kill potential (of champs in the same category)