Do marines really believe they're better then everyone else?

I'm reading through some these answers trying to get some non bias answers about all us military branches, and every time there is a marine saying they are better then anything that breaths air. What do they teach marines in marine training to think that they are better then a Navy SEAL with over a year of intense training, a Green Beret with 2 years of intense HALO and language training, a ranger or air force PJ with months of airborne training? Is the 13 weeks of marine training better then that? If the marines are so good why so we need all the other special forces. Please i need some bias and non biased answers