Gotti didnt personally kill McBratney. Ralph Galione shot him while angleo and john held him. in fact according to witnesses McBratney was very strong and carried both john and angelo to teh end of the bar. Gotti never personally killed anyone he did order many hits although. i could give you a list of the people he ordered dead if you'd like
we didnt know gotti was involved int he vito borelli killing until massino said so when he testified recently, given gotti's tough guy persona, etc i wouldnt be surprised if he did kill
somebody and like i mentioned before we just dont know about it/it hasnt been revealed and probably never will since that was so long ago.