Army Corporal vs. Marine Corporal: is there a difference in the mentality of each?

Just with responsibilities, a Marine Corporal is a team leader like a Army Sergeant would be.  We push more responsibility to the lower ranks, even for myself a Platoon Sergeant or a Section Leader, this is reserved for a Sergeant First Class but in the Corps it's a Staff Sergeant.  We really don't see our responsibilities line up until the pay grades of E-8/E-9.    

SSgt Fair raises several excellent points. I had always found it interesting that even as an E-4, Soldiers still have to earn the right to be an NCO. I agree that the mentaility in the Marine Corps is to instil leadership traits and principles from the very earliest stages of our career. Marines and even Recruits are presented with ample opportunities to lead large amounts of their peers from the beginning of bootcamp onwards, and the funny thing is, for the most part, it works very effectively. The fact is that in todays Marine Corps by the time a Marine is ready to pin on Corporal, he is already a qualified leader, thanks to programs that are fast becoming manditory such as Leading Marines and Lance Corporal Seminar.

In my opinion, not all corporals are created equally in the Army. Although they should be. The responsibilities and quality of corporals vary by the units and job positions. Army Corporals in some of our combat arms units like the 82nd, 101st, or 3 ID that actually hold team leader positions. I'd match against Marine corporals. Most of the laterally appointed corporals from the support units. Not so much.

disclaimer: There are exceptions and no disrespect is extended to anyone's contribution. In my opinion, junior NCO generally had higher levels of responsibility in combat arms units

I believe the way we are promoted is totally different, it’s probably harder to make Cpl in the Marines vs the Army and responsibilities are different

I am Infantry CPL I was staff sergeant caliber which is E6 according to points. The SGT rank is not better than a CPL just probably served more years as they made it mandatory to serve a certain amount of time as a CPL before they go to Next level.
This is something you can figure out with NCO promotion points it's really that simple.
In other words there not better than I am I'll smack the crap outta even E5 all around in competition for rank
But I am also a Infantry CPL there is other infantry CPL that are really excelled individuals and are even better than SGT
They probably did not serve as much years as them in most situations there not better than a CPL in the army

You can look at my rank for example I'll show what a rank really looks like I'll chin check the other JNCOs there not better than I am

As for the Marines I'm not from the Marines we do not compare and contrast with Marines we only worry about our own competitiveness and rank system which is the US army

The Marine Corps, unlike the Army, has no other rank at the pay grade of E-4. Corporal is the lowest grade of non-commissioned officer in the U.S. Marine Corps, though promotion to corporal traditionally confers a significant jump in authority and responsibility compared to promotion from private through lance corporal. Marine infantry corporals generally serve as "fire-team leaders", leading a four-man team or weapons crew of similar size (e.g., assault weapons squad, medium machine gun team, or LWCMS mortar squad).

In practice, however, the billet of fire team leader is generally held by a lance corporal, while corporals serve in the squad leader billet that would normally be held by a sergeant (E-5) in infantry units. In support units, corporals generally serve in "journeyman" level roles in which they direct the activities of junior Marines and provide technical supervision, on a very limited scope, under the direct supervision of a sergeant or SNCO.