I get a kick out of how passionately you're arguing your point. You're so intent on my being wrong that you can't see the forest for the trees. Take a little look-see at the button-naming scheme that your beloved Xbox 360 controller uses. Is there anything familiar about that?
Have you ever noticed that things like codes or combos are a ---smurfing--- mouthful with Sony's controllers. Take a six button combo, X, L1, Triangle, R, Circle, Triangle, Square. Say that out loud. It's ---smurfing--- hilariously stupid. Why? For that matter, why didn't they just have A1, A2, B1, and B2 on the face? If the shoulder button naming scheme makes sense, why not use it on the face of the gamepad as well. Dumb. It's confusing. It only serves to artificially steepen learning curves, without bringing anything to the table in return.
I'll grant that the GC buttons are not in a diamond pattern, but for all intents and purposes they are (which is why they are in my head). It works out the same in terms of having to move your thumb to get to any given button, but gives you a more intuitive and comfortable home position. In fact, if you are someone who uses the tip of your thumb exclusively, rather than pressing one button with the tip and another with the underside of the knuckle, the Gamecube's is a far superior design in terms in terms of efficiency of access to all the buttons. And, of course, the different shapes give far better tactile feedback of where you are on the controller (like the nubs on the F, J and 5 keys on your keyboard, or different shaped keys on your TV remote making it easier to use in the dark).
I am a stay at home dad. It isn't really passion. There are just times I get bored.

For the record... I have not once ever in my life, on this board, any other board, or in the good ol real world made any sort of claim that the playstation controller was the greatest.
I simply stated that getting confused by L1, L2, R1 & R2 is pretty darn interesting, given that they are named after their location.
If you are someone that gets confused by any modern controller, then gaming has just clearly passed you by. It doesn't matter the controller, whether it be dual shock, 360, gamecube, etc... It isn't really that hard to adapt to it.
You play games using it, and you will adapt.
No matter what, with face buttons, you are going to have to learn what each one is, whether it is a triangle or an A.
Seriously...
What the heck difference does it make how a combo or code sounds out loud?
How often does that ever come up that it could possibly be an issue?
You are definitely reaching with that one.
To explain to someone, where to find the left bumper, left trigger, right bumper, or right trigger (yeah, on the 360 controller, the one that I actually did claim is the best), is far easier than explaining the Z button or C UP, C DOWN, C Left, C RIGHT on a gamecube controller.
I think we just have a bunch of people around here that are just plain and simple die hard Nintendo fans. I know there is little love by many around you old fogies for anything not old, and that Nintendo resembles the memory of a good wholesome childhood of gaming, but dang...
I just do not get the arguments being put forth for that gamepads superiority.
Comfortable as heck? Fine.
Confusing? What controller isn't, if you don't spend the time to learn it?

Also...
I am not a tip of the finger tapper, so the rolling ability offered by the standard diamond layout is FAR superior for my play style. The gamecube controller was completely anti that, so it was definitely a factor in my opinion of it overall.
That being said, a tapper shouldn't really have a problem with either layout. I can't imagine that the up, down, left, right layout of the standard diamond is really that hard, and that the gamecube layout really improves over it enough to really matter, but I will conceded at least a little there.
[EDIT]
Dang, that was a lot longer than I thought. I must just have a very passionate boredom.
