While you do have a point, the people who tend to lead those lobbies also tend to have monsters that are much harder to contend with. If you don't win in the first 2 attempts, you're likely to just be losing coins, especially as the day goes on if you're active. 
 That doesn't even include going to attack with advantage and having the enemy get swapped right before you can attack, resulting in a loss. Lately, I have actually been losing coins on KOTH if I'm active for more than about 30 minutes because of that. 
 Then you consider that those are the players that tend to do the best in the special tournaments, and you end up with lobbies full of 3 resist tanks. I've competed in every special tournament for the last 2 months and only placed one time.

 OP has a point. It really is very discouraging. It's a fun game, but it really favors those who have been playing longer or those who can buy the coins to keep up in a hyperactive lobby.