Enemy tanks really highlight if your team is bad or not
I play a lot of casual breakthrough because, I am a total casual. But what I've learned is that tanks showcase your team's teamwork skills so well. If I see a tank, I swap to Engineer and I will keep throwing rockets, AT grenades and mines at it until it's gone.
But I'm just one dude. I can fire four RPG shots at a tank and they'll just reverse into a little safe spot for 10 seconds and they're back to full HP, meanwhile I only have one rocket left. Fighting tanks alone in this game mode is so hopeless that it makes me wanna uninstall the game.
But 2 or 3 Engineers targeting one tank? *Easy*. That tank will blow up before the driver realizes they gotta escape. 2 or 3 Engineers is all it takes to make it easy. But some teams are so full of egoistic and self-centered people that they just don't care. They'll spam chat with "destroy the tank you noobs" while sniping at the edge of the map. It's always one or the other. Hell, I love playing Recon so much that my Engineer uses a sniper so I can do both.
But nowadays, if my team can't handle a single tank, I just leave. No point in playing a losing game for a team that doesn't care.