Intensity

Can someone please explain this intensity thing in proper english. Dont copy and paste the developers note.
Yea wont happen, the french cant win if everyone knows how it works...
you're basically fucked here. It's SN way to explain shit they don't even know about.
I have an AH team, so things may be different for me. I pay no attention to "intensity" and don't recognise any change in gameplay throughout the season.