I play the PC version but didn't know if you guys knew of a stronger enemy one on one besides maybe a high level dragon. I've used the console to pit them against Draugr deathlords, legendary dragons, Falmer shadowmasters, Dremora Lords, and absolutely nothing stood a remote chance. I completely wrecked several extremely high end dragons (with dragon mods to make them stronger) at the same time but ten Forsworn Warlords shut me down extremely fast.
Can you guys think of any other enemy that might be able to beat them? --- ^That
Forsworn Briarhearts are a bit stronger, although it may take you a while to figure out the right version (level 51, warrior type, not caster). I think their damage is pretty much the same but they have more health.
10 Warlords would wreck 10 Ebony Warriors. The Warlords aren't quite as bad if they aren't in a group, solo you can kite and pick them off and they seem to run for cover when hurt a lot more, but in a group of 5+ they are ****ing insane monsters that will shred a Legendary Dragon in before it's feet even fully hit the ground.
Karstaag? I'm not saying that the following would beat them, but it would be entertaining to watch.
Ten forsworn warlords vs.
Harkon Ebony warrior Karstaag Mirrak Werewolf Vagr One of the Dragon Priests Arngeir Falmer Warmonger Odahviing Orchendor --- "M'aiq has heard legends of a man with a powerful beard. This man never sleeps, he only waits."- IamI3rian