I'm certain you don't mean to say that the gravity on earth is the same everywhere on earth.
I'm sure you know better than that. On the other hand, it is pretty silly to say that there's significantly more or less in a certain location (unless by significant you mean indicative of minor migrations of H2O detectable by only the most sensitive of instruments).
I can't believe that a reputable scientist put his name on the theory that there's a blace hole in the "Bermuda Triangle".