How about using your f***ing brain?
Kirk has NUKED every single level he's played at - he hits the snot out of the ball and he doesn't strike out. He projects as the best hitting catcher in baseball at 22 years old FFS. It doesn't take a baseball genius to figure out why he should be a top 100 prospect.
You are looking at these lists the wrong way. It's not that we are overrating him, it's that Eric Cross and whoever are underrating him. Probably because he's a fatty.