Let's establish a couple of things. (1) For the last five years the Akron Zips have pretty much owned MAC basketball, from Kent State on down. No contest, and the numbers and banners bear that out. (2) Groce, by virtue of No. 1, is arguably the best MBB coach in the league.
Kent State is a rival, not an enemy, just like every other team in the MAC. You are only as tall as the shoulders you stand on. When a rival does well, it reflects positively on Akron, the best team/program in the league.
As for your 19-17 argument, it reflects more positively on Kent than negatively on CMU. Kent advanced to two MAC Tournaments, CMU only one. Kent advanced to one MAC title game, CMU lost its opening game. Those early season loses to a pair of Top 10 Kenpom teams and a Top 65 team were translated into NIT at-large invitation, then road wins at a pair of Top 100 teams (St. Bonaventure, 96 at the time, and 86 Stanford). CMU was not invited to a post season tournament. Senderoff was rewarded, Bruno was fired.
Finally, like most on this thread, don't take Kent's failures, shortcomings or success personally. It's a rivalry that Akron sits at the top of. It sounds personal to you - (did somebody from Kent steal your hubcaps) - but just a game to most.