Handling
With their similar turning radii, the H3T and the Nissan Titan definitely handle roughly the same into and out of tight spots.
Drivetrain
The Nissan Titan has a more sizeable engine than the HUMMER H3T. Keep in mind that smaller engines typically get better gas mileage, but a smaller engine usually has to work a little harder.
The Nissan packs quite a punch compared to the HUMMER H3T regarding torque, which is the force that lets you accelerate quickly.
The HUMMER H3T could learn a lesson or two from the Nissan Titan in terms of torque.
Utility
The Nissan will quite certainly prove more convenient than the HUMMER H3T for those of you with frequent child-cargo.
The Titan is a better choice than the HUMMER when it comes to transporting cargo, especially if you frequently need to carry a lot of equipment or sizeable animals.
The Nissan outpulls the H3T by a massive margin.
Convenience
The H3T's fuel tank will need to be replenished a tad more often than the unit in the Nissan Titan.
Comfort
While the front cabin in the Nissan Titan offers a bit more head room than the HUMMER H3T, there frankly isn't much of a difference.
While the rear of the HUMMER H3T offers a bit more head- and leg-room than the Nissan Titan, there frankly isn't much of a difference.
Dimensions
The HUMMER's tank is about the same size as the Nissan Titan's, though the Nissan Titan's is a little larger.
The H3T and the Titan compete for the same parking spaces.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs approximately the same to get the H3T to the dealership as the Nissan Titan.
Regarding gas mileage, the HUMMER H3T and the Nissan don't differ much.
There honestly isn't much of a difference in gas mileage here, but if you must know, the Nissan Titan is a little more economical than the HUMMER.
As far as MSRP, the Nissan Titan costs substantially less than the HUMMER H3T.
Warranty
The basic after-sale protection that comes with the Nissan Titan isn't quite as generous as the HUMMER H3T's.