Cyclops solos. Deathstroke might be able to evade a standard blast, even one of Scott's ricochet shots, but he will not avoid the "Get off my lawn" blast. As for Batman, well, Scott has tagged him in a crossover, and he's good enough to hit Bats in the arena.
Then there's Cap, who can eventually beat Batman in HtH. Then there's the teamwork and leadership the Marvel team would have with two X-Men plus Cap's strategy. Its too much for Bats and Stroke.