I'm only just getting into MMA, but didn't people say the same about Paige when she fought Felice Herrig?
Rose wins imo she is better everywhere BUT Paige appears gutsy in her fights and might make a fight of it. Don't forget how easily Rose wilted against Esparza which is worrying if it turns into a tough 5 rd fight with Paige.
Namajunas is way more technical with her striking and flying-arm bars ect. As far as the standup, both evenly matched but again, I'd say Namajunas is just a little more technical. Prediction: Namajunas via submission.