Dl'd 1.09 this weekend and had to try it out in a small 4 way random..
I cleared a pirate base with two Marzas in under a minute. Just waited for them to mob me, kicked off missile barrage. Ka-boom. Had a second Marza do it again for cleaning up the few who weren't in radius. One empty pirate base. Nuked a Vas fleet too, not even a challenge really.
One cool thing about it. Bring along the caps you have that need leveling, have the Marza stomp the pirates. Instant low risk, high level cap ships !
Gotta say, I play TEC 90% of the time, and I think it's a bit much. Before it was useless. Now, I wouldn't be without it. Maybe tone it back to half of current damage. Or better, limit the radius of damage. Two Marza's will flat out smoke any fleet, excepting caps, in under a minute. It's a solo fleet killer. Marza's rule.