I don't know why BetterSnapTool is even still on the store: as far as I know, it's been entirely absorbed by BetterTouchTool.
I‘m the developer of BetterSnapTool & BTT and have also discovered & reported these fake reviews to Apple about three weeks ago on July 2. They are investigating and keep deleting (some of) the fake reviews, but I have no idea who is responsible for them or what they want to achieve