In my opinion, I thought it was massively over powered. Plus all dinos get nurfs/buffs after awhile of them being in the game, for testing then to balance.
Oh the good ole beta days. Birds had as much movement speed as you could pump into them, vultures were OPAF, the Giga used to be absolutely stupid to kill. So many changes, I agree though the Gryffin was fine as it was. Imo.