I personally would have taken Lewis as well but I can understand if our scouts saw something they didn't like. It'll suck if he ends up being Jermaine Dye II which is what I think he'll be but I'm willing to accept there being red flags there. But apart from Lewis, I just don't like the Anderson pick. There are 5 or 6 ways I'd rather have seen the Braves go.
There's always a degree of projection involved with prospects. You just have to ask yourself if the projection is reasonable. Take Newcomb for instance. His stuff is excellent. The only thing standing between him and the majors is control. If he can drop his BB rate by one batter every 9 then he should be a very valuable piece. It's entirely reasonable to project Newcomb fine tuning his control that much. If Newcomb were to drop his BB rate to under 2 batters every 9 then he'd be one of the most dominant pitchers in the game. However, that's an improvement that's hard to project. That's an unreasonably large improvement.
With Anderson, in order for him to be a front line starter, as his fans say his ceiling is and what you want in a 3rd overall pick, he's going to need a hard to project jump. Right now you can probably project his fastball gaining some consistency and eventually sitting at 93 with decent life, you can project him tightening up his breaking ball and it going from a slurve to a true slider, and you can project his changeup becoming an average to above average MLB pitch. You put all that together and you've got a Trevor Bauer on your hands. A middle of the rotation starter that you really wish was more than that.
The problem is that Anderson needs a projection you just can't make to become a front line starter. With his lack of a dominant secondary offering, his fastball would need a significant jump. If he's going to be an ace that hangs his hat on his fastball then he'll probably need it to jump to sitting around 96 at least. Right now that's close to the top end of his range when he muscles up on one. It's hard to project his fastball to sit that high. Alternatively, he'll need to elevate one of his secondary pitches to being a plus, plus pitch. Neither one projects that high and it would be a stretch to do so.
Anderson's skill set is such that if something jumps to really exceptional, he doesn't have anything holding him back but there's nothing he does that projects to be exceptional. He'll require an impossible to predict improvement. That's why I'm not a fan of the pick.