you’re ready to start right now. They don’t assign a 4 star based on — hmmm, we think he could be good after 2-3 years experience. It’s a designation that says — this dude is ready.
The fact is, sometimes they evaluate wrong — see Conover and others that just weren’t as good as thought. Wilson will be better than Conover but Wilson’s ceiling is serviceable QB in my opinion. I could be wrong though.