your getting unlucky

there is already the rare 3v3 and 4v4.  But they system seems to love 2v2 so 99% of games seem to be assigned those.

The biggest game I've gottne so far is a 3v3...and that was a custom match. In Pantheon it's always 2v2...well sometimes 1v1 In Skirmish I've gotten 5v5 matches...but the majority of the Demigods are AI in those situations.

It seems to me in the first week it was mostly 3vs3 or 4vs4 (IIRC) but then it seems like they patched it to be exclusively 2vs2 since then.  But this is a bit hard to be sure about since they don't relase the patch notes AFAIK (dev journal posts are not patch notes).

I'd be surprised though if they didn't  already stealth patch Pantheon to be 2vs2 exclusively.

But whatever the reason, forced 2vs2 in Pantheon sucks really badly.  They need to put it back to 3vs3 and 4vs4.