I'm pretty sure that it can't, even with trait. Not sure though.
EDIT: Just tested it. I can safely get 3 sky alerts off before you could even come down on me. But you could venom into me if I do 3. That's why I just stick to two. I could actually do 3 sky alerts then hit you with the 4th one if you decided to do another Supernova right after the first one. But if you face a Green Arrow player that knows he can sky alert you out of Supernova as well as MB Supernova, just use the non-MB version. Sky alert will most likely not hit you if you judge the distance correctly. But the MB version will still hit you. Right at the start of the fight if you do a Supernova from that distance, Green Arrow could only MB you out of the air unless he walked forward then did a normal Sky Alert. But if GA has full meter, he can punish you for over 50% if he catches you high enough in the air that you land on his Super. Which isn't too hard.
But I've been playing Martian Manhunter these past few days. His Downward Phase Assault is pretty fcking lame, but overall he's not bad. Sure, he has every tool in the book, but he takes skill to execute and win with. I see him the same as I see Kabal in MK9. I don't mind a character being this strong if he's not retard-easy to use like Superman or Black Adam. I was expecting to blow people up right from the get-go with MM. I mean I'm winning, but not as easily as if I were to pick Superman.