Two Pickups with more similarities, such as the body structure, starting price, and height, than differences, like the model year, horsepower, and maximum occupancy. First of all, the 2014 2500 Mega Cab has a more powerful engine than the 2023 Gladiator. Also, the 2500 Mega Cab seats one more passenger than the Gladiator. Among similarities are the body structure, starting price, and height.