I did take silence into account. The problem is, both classes are presumably going to be getting massive things out early before the opponent can even settle. How many silences and removals are the opponent’s going to have?
This is particularly going to be a problem fighting Druid- Kael’thas is going to allow the cheating out of one massive turn, and then you’ll be dealing with one giant minion after another. Yes it’s dependant on draw, but the tools are there for some insanity in Druid.