Originally Posted by
PsychoEFrost
The thing is, other than a mutual dislike for each other, similar powers, and similar power levels, they aren't really rivals. It would be cool if they were, but all of their interactions were based around Scott, not each other. It's hard to classify it as a rivalry when they barely interact.
As much as most of you hate the Jeen solo, the interactions between Ghost Jean and Emma are some of the best the characters have ever had. It's clear they don't like each other, but they work together for a problem bigger than either of them.