In previous posts, I see that Pct Certainity is defined as follewed:

Pct Certainty=(LL final model- LL Chance model)/(-LL of the Chance model)

Mc Fadden pseudo R² squared however is defined as:

R2McF = 1 – (LL final model / LL Chance model)

Which is in fact simply another way to formulate it. Am I missing something here?