Since we do not have Nova's stats yet, all this is theoretical.
Charge time: 100k dmg/sec
Charge time begins with a 100 sec clock (Romero level 1) and has about 99 sec left when Romero starts firing.
Romero wins with about 20 sec left.
Charge time: 500k dmg/sec
Romero fires first, Nova still crawls forward. charge time 20 sec.
Nova wins but is drastically hurt.
I foresee Nova having either long range, slow charge time or no range, high as !@#$%
charge time. Speed of about 1-1.5 (similar to darkstorm) and HP similar to Prophet. AA capability however is still a toss up. Since the pic shows a stationary forward cannon with no joints to speak of, I am going to guess No!
If you think you have a better theory about Nova, Please say so in comments. If you wanna complain about this, just put "Alt F4" in the comment box instead.
Firohe, Commander for Corpus Technologies.