imo, no game is lost at draft
just a bad way of thinking tbh. especially since its not like league or Dota where a large early game mismatch can lead to irreversible lead advantages later on.
Games aren't lost in drafting, but I'd say you can certainly be put at a major disadvantage.
Having only Tyrande and no full healer I'd say is being at a disadvantage unless your team has good coordination in terms of ganking. Which is rather unlikely if you're solo queueing.