I don't understand how you can say that s&b takes the most skill. As far as I see it, it takes the least(exception may be xbow).
Firstly, starting off as a turtle, your shield allows you to survive a lot longer in battle. As a low level peasant with a shield, you'll find you make it to the front lines more often without being 1 hit by archers. You'll also survive in melee longer, allowing you to learn more about movement which is essential, as one of the first things any turtle will instinctively learn is how to stop enemies running around behind them. You don't need to learn how to manual block(potentially ever) and the only things you need to learn are facehugging and counter attacks. Counter attacks are piss to learn as long as you take a fast weapon and wait until your enemy lands his weapon on your shield before attempting a counter to avoid feints.
No offense to all your turtles but that's ASS.
I started as a 2h, and I tell you that for the first 15 levels I learned very little about this game as I didn't survive against any other class long enough. It wasn't until a bought a huscarl shield that I properly learnt movement, and if it wasn't for other 2h players I would never have learned manual block. I don't know about you but I find it 10 times harder to judge the direction of attack when it's coming from a stubby, fast little axe or pick that you can barely see in 1v1 behind the enemies huscarls shield.
Yeah, there's means and ways of making the S&B strategy SEEM technical but really it's a load of whitewash nonsense. As Xang said it's; wait, counter, rinse and repeat. ASS.