Interesting. I'm not sure how this rating system works. The pluses are pits good matchups or bad machtups? Based on your description however it seems like you're making pit out to be way better than he actually is. Pit is mediocre at best. He has some combo game and his edge guarding is fine but pit relies way to hard on it to kill. Pit really only has a couple of kill options making him struggle to kill. You have a combo into forward air off stage. Back air at like 120% and side-b/smash attacks at the same range. So if pit is going up against a character with great recovery that first option gets shut down making him struggle terribly with killing. Unfortunately for Pit those characters happen to be the ones that are dominating the meta. Pit also doesn't have a great disadvantage making it easier to combo him and just punish him when trying to land in general. Honestly pit is just mediocre in everything which is why he is generally considered to be mid tier.