I agree that it wasn't anything extreme like 1 guy fighting 2 fighter's off at the same time but these aren't professionals, in any fight one good punch can mean the world. That's not even considering the effects of having to read/react to two fighters.
I get that he wasn't involved with scuffle 2, 3, and 4. But if the first rumble (the unfair one) is the one where ralph get's a concussion then it doesn't matter how fair the rest of it is. The rest of the fight, he is half as capable as he was before the concussion, and when you're fighting at half of Ralph's normal fighting capabilities you're essentially fighting like a retarded obese toddler.
Now, if you'd like to say Ralph was retarded for reengaging? Yea sure 100%. I think his best outcome was to back off and mock them after getting the first beating. He could of recorded Big man Dan and laughed at Cog for needing to bring a pub brawler to a street fight for protection. Could of just went on and on about how cog's a pussy, but he didn't, and instead pretended like he had a chance just to get ragdolled.