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 আরো because he's kind of smaller, but still bigger and protective. Emmett স্যুইটস্ 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 প্রণয় Alice with Jasper. <3 Just look at them!!! I would of put Emmett and Rosalie, but আপনি can only put one picture. :[ Shame. <3 them. :]