Why do you think this is not accurate? Both played in the SEC. Both are Jr's. Cunningham posted better numbers in the same Conference, while playing on a much less talented Defense.
Reuben Foster Combine Numbers:
...........
He was sent home.
Zach Cunningham's Combine Numbers:
http://www.nfl.com/draft/2017/profiles/zach-cunningham?id=2558094
To my knowlege, no red flags on Cunningham. Foster has a few off the field issues already.
My question is, why wouldn't anybody look at Cunningham and not consider him a better prospect, based on the info available to us?