It didn't take Lewis two years, it took him one. He's much better this year than he was last year, but he was already really good last year. Again, that directly upward trajectory excites me. He's crazy good, and there may be even more room to grow.
Right, I totally see your point - and again I'm nitpicking. Which is what you have to do to differentiate between guys at the top of the draft.
You look at it as upward trajectory; a part of my brain looks at it as 'is he playing over his head this year'?