Utility
The Frontier's more sizeable trunk will accommodate more big things than the Suzuki Equator.
Neither the Frontier nor the Suzuki Equator has a marked advantage with respect to seating capacity.
The Suzuki Equator is a better choice than the Nissan Frontier regarding transporting cargo, especially if you often need to carry a lot of suitcases or large animals.
There's little the Suzuki Equator can tow that the Nissan Frontier cannot.
Convenience
You won't have to visit your friendly gas station more often with the Frontier than with the Suzuki Equator, because both offer similar ranges.
Dimensions
The Nissan and the Suzuki Equator 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 Suzuki Equator to the dealership as the Nissan.
There isn't much of a difference in gas mileage here, but if you must know, the Suzuki Equator is a tad more economical than the Nissan Frontier.
The Nissan isn't much costlier than the Suzuki Equator regarding MSRP.
Warranty
The Suzuki Equator and the Nissan Frontier have the same basic after-sale protection.