Spec sheets and numbers are virtually worthless if a vehicle feels like a broken tin box running on nothing but hope. In other words, all the hype in the world can’t deliver real-world results. So it’s a good thing GM took this into consideration when it  developed the all-new GMC and Chevy HD pickup trucks to be just as good at towing, hauling, and driving as the trucks’ performance on paper. And the results of the latest PickupTrucks.com Heavy-Duty Shootout prove this.

Against the likes of the highly comparative Ford and Ram three-quarter and full-ton trucks, The General’s 2500 and 3500 HD models, equipped with the Herculean 6.6 liter Duramax diesel engine, emerged as clear winners.

The shootout was incredibly thorough and rigorous, tallying scores on subjects such as fuel economy, performance, quality, value, and even hill climbs. While the Vortec-powered GM trucks didn’t do as well, and Fords trucks – as tested – only featured the “Job 1″ 6.7 liter PowerStroke diesel engine rather the upgraded “Job 2″ variant that will deliver 800 lbs.-ft. of torque – credit still has to be given to all the engineers involved in taking 2 out of 3 titles in the biggest PickupTrucks.com shootout ever.

Click here to read Pickuptrucks.com’s full comparison test.