Tock is originally a team based game, even if I designed the adaptation in BGA to be playable in a free-for-all mode (this enables to play with 2, 3 or 5 players too).
In my opinion the Arena format should be set to team game (2 vs 2) because the game is more interesting and challenging with that option, and may reduce the luck factor.
The stats does not show of often 4p games are played with teams (because stats for options are not grouped by the number of players) but I am nearly sure there are more than individual games.
Thanks! Do not hesitate to debate it here, I would be glad to know what you think about it. And I would like to see that change happen if you think like me it is justified.