Interesting vintage test video (non-Mopar)

fratzog lover said

The 325 and 350hp cast crank engines, yes. The 325hp was a station wagon engine. The L78, now that was the real deal.

Click to expand...

How did the L78 compare to Mopar engines? Was it close to the 383 Road Runner engine or more than that? Obviously it was rated at 40 more HP than that 383 but wasn't the actual performance a lot closer?