I skied Denton a lot while in College, and I can report, it's got some steep stuff, but definetly not the steepest in the east. Steepest in PA maybe, it's much steeper than White Lighting. My girlfriend skied White Lighting in her first season on skis.
Imagine WL with trees on it... And steeper.
If you want real steep stuff look to Jay Peak, Stowe or Smuggs.
I'm sure one of them can claim the steepest in the east.