Cost
The GMC Yukon XL 2500 isn't much less pricey than the Toyota Sequoia in terms of MSRP.
Utility
The Toyota Sequoia and the GMC Yukon XL 2500 can accommodate the same number of passengers.
The GMC Yukon XL 2500 is a better choice than the Toyota Sequoia in terms of transporting cargo, especially if you frequently need to carry a lot of cargo or large dogs.
There's little the GMC Yukon XL 2500 can tow that the Sequoia cannot.
Comfort
Taller drivers will considerably enjoy the extra head room in the GMC Yukon XL 2500's front cabin compared to the Toyota Sequoia.
The GMC Yukon XL 2500 provides more head- and leg-room to your passengers than the Toyota Sequoia does.
Dimensions
The GMC is substantially heavier than the Toyota Sequoia.
Your wallet will hurt more every time you fill up the GMC than the Toyota Sequoia because of its bigger tank.
The Sequoia and the GMC Yukon XL 2500 compete for the same parking spaces.
The Toyota's shorter wheelbase may produce a less-settled highway ride but a more agile feel in daily traffic than the GMC.
Performance
With that kind of horsepower, both the Toyota Sequoia and the GMC Yukon XL 2500 are genuine sportscars.
Handling
With its tighter turning circle, the Toyota Sequoia is quite certainly sprier than the GMC Yukon XL 2500, something to consider if you do a lot of city driving; on the flip side, note that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
The Toyota's engine is considerably smaller than the GMC Yukon XL 2500's. Bear in mind that a smaller engine usually has to work a little harder; on the flip side, smaller engines typically get better gas mileage.
The Toyota could learn a lesson or two from the Yukon XL 2500 regarding torque.
Warranty
The GMC and the Toyota have the same basic warranty.