Can you imagine Gibson with a sinker? Wow!
Having said that, there are too many differences in the game to fairly conclude who was the best. In general athletes are better now and as much as I admired Gibson, anyone that thinks any former pitcher could dominate major league hitting better than Beckett has in the last four games, is too biased to be believable. jmo
If you don't have instincts, get out. If you do, go with them.