Most pages in Appbot only look at reviews with text, not overall ratings like in the app stores, so you’ll find the number of reviews is lower than the counts you see in the app stores.
Head to the Ratings page in Appbot to see the same data you see on the public pages of each app store. Ratings include star-only ratings as well as reviews with a text comment.
More detail on the difference between Reviews and Ratings can be found here.