As a Cardinals fan, I think this a wasted pick.
Bittle is a good pitcher, but he has some injury issues. I'm not sure if he will even pitch again, to be honest with you.
Lynn is doing pretty well at AA aside from one start, and I think he will be a back of the rotation guy eventually. He has shot up the ladder so far. I wouldn't be shocked at all if he ends up on AAA by the end of the year.