Small block gas mileage DD magnum/LA ?

This is what I found in my quick search, for factory originally installed Mopar cams .
Can anyone verify these to be correct??
And does anyone know,for sure, what the original installed centerline was?
5.2 cam; 251/264/113Lsa
5.9 cam; 249/269/109Lsa

I keep bumping into some crazy-looking numbers.
Everything I have seen is that the factory 5.2 cams are slightly more aggressive than the 5.9 cams.