Gemini Saga already defeated Red Hulk and Thor in the past and he now goes up against the original Hulk! Hulk may be powerful, but Gemini Saga can match him physically. Saga also has the advantage of high speed flight on his side and a single energy blast could potentially take the Hulk out of the fight. The Hulk simply cannot keep up with Gemini Saga and the green behemoth would eventually be taken down. Gemini Saga wins.