The difference is the newer fighters still suck....the older ones just are old on top of sucking.
That chick is terrible at every aspect of MMA...the only thing she has going for her is strength, a decent amount of athleticism(relative), and aggressiveness.
She came out swinging like a washwoman, horrible, clumsy technique with her chin straight in the air and any competent fighter(ie a male) would've knocked her silly in a minute. She makes Clay Guida look like Georgio Petrisiyan.
The good thing with her is the entire division of women are horrible at taking strikes so those wild washwoman windmill punches can take someone like Shayna out of a fight...as pitiful as it is to watch.