Possibly he may be comparing the slowest of the Hemi cars to the L88 cars. The thing about the L88 cars are if you see one at the Pure Stock drags it's a 90%+ chance that it is a prepared car built especially to compete in the pure stock drags and thus the times. Many of the Hemi cars are driving restorations with very little drag race prep.

The 67 Rt is more along the line of a prepped Hemi car although I am thinking that is a new build and possibly has more in it.

As far as the Pontiac's go there is one really fast Ram Air II Firebird. To say it is well prepped would probably be an understatement.