Really, all one has to do is look at Crippling Wave. You get a comparable rune at level 57 that grants a 10% more damage for 3s buff to everything that it hit. Do you truly believe a level 54 rune is going to give you not even more damge, but have ten times the uptime and no "on hit" requirement?

Higher level runes aren't suppose to be better, that would kill all previous runes fuction