Shouldn't Majestic's 10,000 years worth of warrior experience enable him to beat prime due to his strength being not that far off from SBP.... i know SBP is stronger in terms of Raw Power, but Majestic's Raw power isn't that far off, both are planet movers.
But anyways, I still believe team one would still beat them, and the scenario would go like this. Mon-El smashes apollo, while SBP and Maj are evenly brawling it out. Mon-El enters the battle thus two on one. Mon-El will get knocked out, but by that time, Maj would be worn out, and SBP would just RAAAAAAGGGGGEEEEEE tirelessly. After the battle is done, SBP will kill Mon-El due to emoism.
Majestic has Superboy's strength (they're both planet-movers) but Prime doesn't have Majestic's intelligence, skill, or experience fighting opponents that are actually on his level. I see the two of them fighting like a new, fresh wrestler, against a seasoned vet still in his prime, or like Batman against someone who's physically a peak human, but without any of his skills or intelligence. And thinking like that, Majestic could take Prime and Mon-el together since Mon-el is probably out of Apollo's league.