Her cornering compared to Claudias may seem inferior to some people. Claudia is in the ring coaching and helping her fighters, but we did see in episode 5, that Joanna was all up to the cage now and coaching more. So yeah her fighters could probably really use her adviceo n what to do, but at the same time she´s giving them the oppertunity to do what they think is right and what they practiced. Sometimes in mma fights it can both be an advantage and a disadvantage havign a corner yell at you, as you´ll know the opponents moves or you can counter whatever they think you´ll do.
I think Joanna is just really hardcore, and when you´re in there you know what to do, you´ve trained, now all you need to do is fight and go for it. Exactly what Joanna is saying. Not all the pampering stuff, not in the ring at that time. Very few fighters seem to even be remotely like Joanna. Helen sure showed fighting spirit, plus she said that she thinks everyone trains like a pussy compared to Joanna. She showed alot of respect for her. And obviously Moyle saying she had the best training of her life from Joanna says alot, as shes a very hard girl and very determined herself. Either she´s a great coach to you or she´s horrible because you need one more like Claudia, so itreally depends on your personality and how far you are to be on your own.
So Joanna is a great coach from what I´ve seen. They should be honored to have her as a coach, its rare to find such harsh and good coaches like her. Most will pamper you or those that will be hard on you won´t be able to put in the work themselves. But Joanna does. She leads by performance.