UCLA has several "dominant pitchers". They also have incredible hitters, as does Arizona. Pitching is still the king with fastpitch softball. The issue with softball has gotten to be whether you have unlimited access to a rich set of athletes and whether you are forced to trade off fielding skills and base running speed... with power. UCLA has so much to choose from that many make the incorrect observation that they "option" for power. They have a feeder system and athlete network that allows them to find and recruit girls who can both field AND hit for power. But, make no mistake about it... there isn't a pitcher on that team that isn't a "dominant pitcher".
The game has not changed.
UCLA doesn't have a lot of base running speed... but when you crank the ball like they do... you don't really need it. UL, by contrast, uses base running speed as it's most potent offensive weapon.