Blue Mary is a skilled hand to hand fighter who can even use energy to amp up her attacks. As such, she is not a fighter that you can afford to underestimate in a street fight. At the same time she isn’t quite ready for Mary Marvel’s attacks though. Mary is considerably faster and more powerful than Blue Mary. MM has strength the likes of Shazam, she would be able to win this with a single punch once she connects and with her speed that should be easy. Mary Marvel wins.