Yeah I play a lot of burst mages and the damage seems mostly fine to me. For the last few weeks healing/shields have been so strong seemingly that I suppose people are upset at the percieved "lack of damage" but I'm not buying it. The damage seems fine, albeit a little lackluster feeling.
Tho I only really play unconvential burst mages like zilean and varus', though their damage seems fine, and when I see other burst mages their damage also seems fine.
Again, it was probably the shields and healing power. Who knows what's strong now though? Maybe burst mages actually do suck with the rune update, has anyone been so far as decided to use even go want to do look more like?