I know some people love invis, but against an aware opponent, I've always found it largely useless. I typically play with a group, we do similar stuff. Sure, there are ways to counter every super, and good teams will use them. Sunbreaker has been without a doubt the hardest to counter though. Every other mobile super I feel I can 1v1 in the right situation. Either via shotgun + melee/ grenade + pimary/ sniper headshot. None of that, on it's own, is enough to kill a sunbreaker, and a good sunbreaker will land his hammer by the time you've finished that, regenerating their health. Yes, all titan melees are largely useless, but at least with cauterize, the melee will regenerate your health.