Okay this is what I think. No, I don't think Emmett would be right of Alice. Alice is really small and petite and Emmett's alot bigger. Jasper fits her lebih because he's kind of smaller, but still bigger and protective. Emmett Suits Rosalie perfectly because he's sort of Jock. Alice and Jasper are equal in many ways, so are Emmett and Rosalie.
So over all no, I don't think they would make a good couple...
Plus...I Cinta Alice with Jasper. <3 Just look at them!!! I would of put Emmett and Rosalie, but anda can only put one picture. :[ Shame. <3 them. :]