Yes this is true for the good and for the bad, Jaye is very well written and the dynamic between her and the MC is powerful, but on an extreme example, there is some very well written villains around and even though I guess many more will still cheer for the hero even if has less depth than the antagonist.
I'm with darkcaptainfighter, even though the former is true I enjoyed more the fresh relationship and dynamic between the MC and Mal, so no you are not an oddball and you are not alone in your preference for sure but yes I believe that probably there is more Jaye fans than Mallory's and it is understandable.
On the players choice statistics your signature it the best answer

Facts don't care about (our) feelings, and as former scientist student and later/now Quality technicien I rely a lot on facts and statistics/probabilities so I also "follow" (not blindly) that motto.
If I wasn't that kind of player that plays almost every path possible, and I did play all the 4 main paths and the alone path (later after chapter 9 was released), probably I only would play the solo Mallory path that was my main playthrough all the way (but wouldn't play the game over) when I replayed all the paths after the release of chapter 9 misleading conclusion of Jaye and Mallory open relationships that didn't gone the way I thought it would and at the time it was my only playthrough. Got pretty pissed at the time but the game is so well written I decided to start a new main playthrough focusing on Mallory that at the time already was my favorite.
Side note : sorry about the last paragraph, English isn't my first language and had troubles to put my train of thought into words, after read it, it seems confusing even for me

. Hope is clear enough hehe.