Diesel Powers Challenge, surprising numbers

A 2002 Chev Silverado pulled 1481hp and 2466ft lbs.

but first place at the dragstrip went to a 900 hp Ford
http://www.dieselpowermag.com/2012/diesel_power_challenge/


I

I don't understand why the guys are dynoing diesel trucks indoors with the doors closed. But check out the effing cloud they make!