Both of them have the same sort of AP, but Alpha's fighting style is the same kind of reckless thing that Yang had to abandon in order to further improve herself. In this fight, she'll probably mostly just get around Alpha's attacks and hit him while he's making his blows. If he uses his reactive power level to overpower her, she can just pull semblance and TKO him just like that.
So from what I can tell, Yang should be able to figure out Alpha without too much trouble seeing as how he seems to be even more reckless than the phase Yang grew out of. She'll land most of her hits while Alpha is strugglin' to get his. By the time he does get hits in his they would be more like fuel for Yang's Semblance.