Looking at the DEs and DTs at OSU, there aren't many schools I can say that are in a better spot this year. I also still trust in Larry Johnson given his track record.
As far as Harrison goes, you can't just go by sack's alone to determine how good a DE end is. He also had 4 pass deflections, 3 FF, an INT, and 8 TFL. He had a very high PFF grade last year because he was a disruptor, but part of the problem was our DBs sucked so bad the ball was out before he could get home. He had a real solid grade against UGA, as well, so it wasn't like he was just beating up on shitty teams. Atlanta might have gotten a massive steal in the 3rd.