From what i know there's no significant difference between Marines and the US Army if you disregard all the hype but then again i'm not in US Army.
Wrong. The Army combatives program is based on BJJ, and Muay Thai. While the Marine program (MCMAP) also uses some BJJ, it greatly differs in the use of judo and karate style striking and they focus more heavily on bayonet tactics. From a personal standpoint, I feel that the Muay Thai strikes that are used in the Army combatives program are easier to learn, more effective, and less likely to cause injury to yourself while performing. You seem to think that combat is a one on one sport, and this is most certainly not the case. For exapmle, you asked how US troops get abducted in Iraq? The only cases I'm aware of involve either an IED strike or ambush that rocked the unit so hard that they were unable to prevent a dazed or wounded soldier from being dragged off. Usually the troops were hurt, and they were always outnumbered. I fail to see how proper employment of combative techniques could have prevented those incidents, so why even bring them up? I agree with you that I think I could handle 9/10ths of insurgents in hand to hand one on one.... but what about 3? What about being dragged from your driver's seat while dazed from a blast with the rest of your crew either dead or unconscious? You seem to be very confident in your ability to handle yourself in a fight, and that's good for you. If you make a living as a fighter like some of us do (including me) then you need to take a more comprehensive approach to personal protection to be prepared for a bad situation. I'm not talking about throwing rifles at people, I'm talking about the proper training and the proper equipment (use of combat locks, proper vehicle intervals, dismount under contact drills, squad movements, personal locator beacons, etc.). Almost every soldier I know would be unable to throw his rifle at someone because we keep it combat slung for retention purposes with either a 1, 2, or 3 point CQB sling. It makes it a lot easier to climb walls, search houses, stuff like that, while still being able to pull it up fast to line up a shot. I use the VCAS 2 point sling with the adjustment slider and it's the bees knees for CQB.
I think your comment of how your battle buddy won't be able to shoot someone just because you are engaged with them showcases how little combat experience you really have. It can happen, and I've watched someone shoot a guy point blank in the face while he was trying to wrest a pistol away from another soldier so don't sit there and make arbitrary statements about how stuff can and cannot happen because you obviously don't know. Try having your friends focus on eachother and try to wrestle eachother for dominant position. You'd be amazed at how easy it is to walk right up to them and put a pistol to one of their heads while they are focused on the guy that they are fighting. When they are in a struggle against another guy, they stay fixated on the guy they are fighting, giving you freedom to manouver to help. This is real world info, not something I read online or in a book, or something that some guy who's never been in a fight told me. Once again, training and teamwork are key... but hey, don't let me change your mind since you've been doing this for 2 whole years. I've got 11 in and 3 of those have been in combat (cue the random "I've got more combat time than you have in the military" saying) so I'll just keep doing what works for me. It's kept me alive this long. I try hard not to throw my service record in people's faces, but I really dislike misinformation especially when it's in reference to life and death situations.
Oh, and find me a guy running house to house in Iraq with an entrenching tool, I'd love to see that one.