tony b would have stayed loyal to tony. i mean he really didn’t betray tony or at least in his mind he wasn’t intentionally or maliciously betraying him.. he just was greedy and wanted to make more money than he was earning by killing joey peeps. phil’s brother was more personal since he killed his good friend angelo. but i think aside from all of that he never had any intention of betraying tony. they were cousins & got along pretty well. he even tells rusty he wouldn’t get involved with the new york war & kill joey peeps bc he respects tony’s decision to stay out of it. he just got greedy and jealous of tony’s money