I know number of citations is far from perfect, but from a rough look at google scholar his papers (since he started as assistant professor) have been cited <10

I know number of citations is far from perfect, but from a rough look at google scholar his papers (since he started as assistant professor) have been cited <100 times... I am not too familiar with his field but in most CS fields I would assume that hardly counts as groundbreaking research. I am sure there is some kernel of truth in his claim of unfairness, and he seems like a genuinely great teacher, but denial of tenure seems more like a case of promising faculty (his publication record prior to his start at UB seems stellar) not living up to expectations?