That's because your filter doesn't filter for times you had a chance to 3bet it filters out times you didn't face a 3bet or 4bet.
Some examples of hands that would be different:
A raises in EP, you 3bet in LP, A 4bets.
That would count for your stat, but not for your filter.
A open shoves all-in preflop in EP, you call on the button, everyone else folds.
That would count for your filter (you faced a raise, it wasn't a 3bet or 4bet), but not for your stat (you didn't have a chance to 3bet).
Hopefully that helps clear things up for you :)
