I'll spare you the "shocking news" part, but 1s and to a lesser degree 2s are all that matter in terms of balance and therefore actual competition. That is a statement of fact, btw, not necessarily an endorsement, even though I personally prefer it that way. 3s and 4s have their very own rules and of course demand some strategic thinking and micro as well, however, its pretty generic RTS fare and has little to do with the facets that make the CoH franchise idiosyncratically attractive. Fact is, you cannot balance a game like CoH for both 1s and 4s, and Relic has obviously chosen to attach priority to the former. Suits me, but I can understand its frustrating for guys that have other preferences.
So, just taking a quick look at live games on any given day as in right now at time of writing this 48 1v1's vs 68 4v4. That is 96 1v1 players in games vs 544.
Lets take a look at 3's vs 2's. 72 games, 288 players on 2's
42 games of 3's at 252 players.
And finally custom games.. if anyone cares. 247 individual games up at time of writing.
This is not a uncommon occurrence either. I notice similar stats every time i log in.
But hey lets focus balance around 1's. Even if it is the mode with the lowest player base.
This is a very fun game. But for exclusive 1v1 action it goes to SC2. =/