Two Pickups with some similarities, but otherwise different in most aspects such as the model year, horsepower, and maximum occupancy. First of all, the is a newer vehicle by 10 model years. Also, the 2013 2500 Mega Cab has a more powerful engine than the 2023 Gladiator. And finally, there is a difference in the number of passengers; the 2500 Mega Cab seats one more the Gladiator. Among similarities are the body structure and starting price.