Trim,
One of my kinfolk is a US Army Captain....Airborne, Ranger, and now accepted for the SF training pipeline as he made it through the initial selection course. First he has to attend a six month long Captain's Career course before he can begin the two year SF training scheme. That means he will have almost three years of training added to that he got during his four years in ROTC, Basic School, Jump School, and Ranger School. Thus far...he has had a one year deployment to the Sandbox with the 101St Airborne.
With the Navy....he would have gone to some sort of Officer Charm school...then straight to BUDS...and if successful...on to the full SEAL course. The specialty training would all be part of the SEAL training instead of having to jump through all the other hoops enroute.
The SEAL's are as successful as they are because of all the intelligence support and operational support they get from other units and branches of the military and civilian intelligence services. They get the training, money, and turn out a very fine product. The other SpecOps units do as well....and in a lot of cases get very little publicity which we cannot say of the SEAL's.
The job our SF Cavalry did in the early days of the Afghanistan War gets very little recognition....and what they accomplished is amazing. The SEALs have had some tragic failures along the way....usually when they were asked to do something they were not suited for and was outside their mission set.