You have not seen anything...!!
When I ask for 2x2 battles, simply there are no players. After waiting 10 or 15 minutes for a battle, the system assigns me players below 2000 (I've had "opponents" below 5000), with a bronze skull and some with no skull of any color.
It's not fair to them and isn´t fun or fair to me. I can only say "I'm sorry, it's the wrong system". Some understand it and respond "no problem." Others I don´t want to know what they think.
I am putting my effort to finish my 2nd. Mech and I wonder then if it's worth it.
I ask, in these cases that there are no players, because after 5 min. (for ex.), the system does not assign an automatic opponent, a system mech like those of campaign battles?