Marvel has traditionally been better with the team dynamic. They have more well-known teams than DC. There's Avengers, Fantastic Four, Defenders, Thunderbolts, New Warriors, New Mutants, X-Men, The Order, and I could go on and on.
DC has mainly Legion, Titans, JLA, and JSA. Probably just as many team titles as Marvel, but I definitely cannot name as many off the top of my head. Oh there's Outsiders, Shadowpact, Infinity Inc. and so on. But other than the top four I previously mentioned, none of them have made a very splash in the collective fan consciousness.