Stadium: Dallas Cowboys and Campbell's Chunky
Solo: Headliners - Rookie by Name
Solo Battles: Any
X Factor: Selfless and Unstoppable Force
Normal Requirements: 5 Hit Sticks and 3 Sacks/TFL respectively
Using the above criteria, I tested both Homer and Indoor Baller on the defensive players that had either selfless or unstoppable force in both solo battles and in the solo mentioned. I chose that specific solo since it starts you on defense in Comp Mode so I could quickly check the requirements to see if they changed. No matter what combination of X-Factor, ability and stadium I chose, the requirements stayed the same as what they normally are. I do not know if this is a bug as I'd expect the requirements to lower per the ability description but they did not.
Has anyone had luck lowering defensive X-Factor requirements using the designated abilities? I was hoping to bring down the requirements for selfless as that would have the most value to more easily activate it which in turn would activate dual Unstoppable Force on my squad.