T'Challa in Vib' armor and claws can take anyone on the DC team.
Cap with shield Can get 6/10 from each and at the very least Hold his opponent till T'Challa can jump in. Elektra Takes Shiva while dishing out telepathy attacks to all 3 as a distraction.
Gear plays a big part for team DC, so its no way a stomp. But Marvel wins, if this is Steve and T'Challa.