Performance
With that kind of horsepower, both the Sierra 1500 and the Toyota Tundra are genuine speedsters.
Handling
With their similar turning radii, the Toyota and the GMC Sierra 1500 quite certainly handle roughly the same into and out of tight spots.
Drivetrain
The Toyota's engine is significantly smaller than the GMC's. Keep in mind that smaller engines can be stressed more; however, smaller engines are often cheaper to fix.
Torque is roughly equivalent to acceleration, and in this respect, the Sierra 1500 is substantially more powerful than the Toyota Tundra.
Utility
Neither the GMC Sierra 1500 nor the Toyota has a marked advantage as far as seating capacity.
The GMC Sierra 1500 is a better choice than the Toyota Tundra with respect to transporting cargo, especially if you frequently need to carry a lot of stuff or massive pets.
The GMC outpulls the Toyota Tundra by a massive margin.
Convenience
You will quite certainly have to visit your friendly gas station more often with the Toyota Tundra than with the GMC Sierra 1500.
Comfort
Taller drivers will significantly enjoy the extra head room in the GMC's front cabin compared to the Toyota Tundra.
While the rear of the GMC Sierra 1500 offers a bit more head- and leg-room than the Toyota, there honestly isn't much of a difference.
Dimensions
Your wallet will hurt more every time you fill up the Sierra 1500 than the Toyota Tundra because of its bigger tank.
The GMC Sierra 1500 and the Toyota Tundra compete for the same parking spaces.
The GMC Sierra 1500's shorter wheelbase may produce a less-settled highway ride but a more agile feel in daily traffic than the Toyota Tundra.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs about the same to get the Tundra to the dealership as the GMC Sierra 1500.
The Toyota Tundra won't tax your gas budget considerably more than the GMC Sierra 1500 will.
With respect to MSRP, the GMC Sierra 1500 costs approximately as much as the Toyota Tundra (though the Toyota Tundra is a bit cheaper).
Warranty
The Toyota and the GMC have the same basic after-sale protection.