Well the basis which most people go by or are most referenced would be the PFT/CFT, shooting quals, and longer training. despite sometimes training at or with other branches (example most arty Marines go to Ft. Sill due to the low budget of the Marines) Im not saying the quality of life is better, not saying Marines are smarter or That they have better benefits or that Army Infantry isn't worth anything. Just the two branches as a whole are pretty different Marines seem to sell the Pride and Discipline aspect of the military (I.e. Blood stripes, and pinning along with other fun hazing initiations) Although the Army has better SF and also has many avenues to pursue better training and other high speed shit. with all of these benefits Ill say In a combat situation when you need to kill the enemy usually a basic Marine Infantry Company as a whole would probably preform better than a basic Army Infantry Company. They're more alike than any other branch and both do their job