Yeah yeah, only 65 attempts. But, small-ish samples can still be indicative of longer term success.
https://www.sports-reference.com/cfb/players/brady-cook-1.html
Think of it this way:
Better arm than Bazelak and probably more accurate
Considerably better receiving corps
3rd year in the system
Better runner than Bazelak, and MUCH better runner than JT Daniels, who was an absolute slug:
https://www.sports-reference.com/cfb/players/jt-daniels-1.html
So, from last year, we've upgraded at both QB and WR (how much, we shall see), and I think we'll be fine at RB. I just hope the OL can be reasonably good.