Hmm well overall gladiator in yerms of strenght is probably more durable and stronger. But his energy can run low and marvels doesnt and has unlimited source. Superman has beaten captain marvel many times and vice versa the other way a few to . Gladiator can literally manhandle juggernaut and other super strong guys. If he lands a solud blow or chokes marvel out he wins. But marvel has more weapons and if keeps distance and manages the surrounding environment around them he will win.