I think the biggest difference between regular Yang and Yang B could be if Yang B goes to beacon since she's being trained by Raven and maybe a bit too busy doing what bandits do to attend school however perhaps Raven sends her to learn more like how she went to Beacon to learn how to kill huntsmen and huntresses so maybe Yang B would also go although Yang B might not be apart of team RWBY since Ruby most likely wouldn't know Yang.

Now I'm interested in the different Ruby that didn't know Yang but the parts most interesting to me is when Summer dies since Yang says Tia "broke down" I wonder how Ruby would've gotten past Summer's death possible by herself. It would be interesting to see how different Ruby is. I wonder how different her team would be since Ruby doesn't know Yang B so she wouldn't insist Yang be on her team and Yang most likely won't think about Ruby unless Raven tells her about STRQ so Yang notices Ruby is related to Summer the leader of her mother's team.