Jayce W on buildings late game does enormous damage

Hey guys!

I occasionally play Jayce in normals and I was just curious how people felt about his W (Hyper Charge) when it comes to taking down towers. Coupled with his above average attack damage as well as cooldown reduction, mid/late game Jayce can take a tower with 2 or 3 Hyper Charges (which has a relatively short cooldown of 6 when maxed).

I'm curious if the LOL community would be open for Jayce's W in Cannon Form to do less damage to turrets. I don't think this would tone him down too much, and I always feel a little guilty when I tear down two towers with just one minion wave. Thoughts?