I agree with what's been said. Odgers was a captain or alternate on a few teams so he brought more to the table than Cummins.
My easiest assessment is that they played in an era of great, great fighters and simply were not as good as their contemporaries so they had a lot of losses.
When fighting guys of the same caliber, they'd do fine but putting Odgers up against Eric Cairns
is just a horrible mismatch and the blood left on the ice proves that.
Cummins was a real gamer, he'd fight anyone but just didn't have the size, strength, or power of many of the guys he fought, that's all. He did his job and stayed in the league for a decent amount of time, surprisingly, because he wasn't much of a player other than being a team player who'd go up and down his wing and throw some hits and fight.
And yes, you have to have a screw loose to be a hockey player that fights for a living. Not everyone can do it, that's for sure!