Quite a bit!  The Glowing Amulet with a fairly strong drill has about the same reaction in the dry as fairly week drilled SBG!  The SBG is surprisingly very strong off the dry boards!  GA is drilled pin to the left of the ring finger - I am lefty - and CG kicked in.  The SBG pin is below the ring finger and kicked out - even with this layout with my style I find the gargoyle seems stronger particularly off the dry boards.  For The GA The core is the inner portion of the Gargoyle with a larger spherical wrap.  What I have seen is the GA as a solid seems to be able to handle more oil than the SBG however the backend is actually more smoother than the SBG.  I can't believe they discontinued it hopefully they bring it back one of the most interesting bowling balls ever made!