+1 Glen

To the OP (original poster) - I'm not sure about a razor being too sharp at all.

I think it's more of a case that a razor may have a wire edge or micro-serrations that can cause facial trauma.

I'm from the stance that - once a razor has reached it's peak on the hones/strops/pastes, it can only get so far and anything after that only serves as damaging or ruining the edge. (making it too fragile)

Hope this helps.