No, I was fairly serious... Its kind of hard based on the skill vs strategy thing.
I think spy takes an immense amount of strategy to play correctly but also a healthy dose of luck. (which is why he isn't super high on the skill vertex) I classify a persons skill as a lump category. Including knowledge of terrain, placement of items, STRATEGY for different scenarios, position and class of teammates, etc. All of which are important. But you have to admit, there are times when it all comes down to, "will the heavy turn around?" Spy is the hardest class to master. He IS the "class based fps shooter" version of the game of chess. I am not knocking the masters of the class, we have a clan member who frequents spy and he destroys everyone on a regular basis.
Demo and Soldier are not too high up on the strategy end of things because of what they do. Both are nowadays mainly used for offense but unfortunately ALOT of people use these classes as spambots. The true demos and soldiers, which are easy to spot, use alot of skill. (this skill being used to refer to aim, timing, positioning and opponent control {juggling, rebounding etc} Air shots for soldier, air bursting stickies, bouncing nades off of corners... stuff like that takes skill. Not a ton of strategy involved MOST of the time.
I'm not trolling or flaming, I just have a different perspective. Now that I look at my matrix, I would probably move the spy up to just beneath the scout on the skill vertex but keep him the same strat wise. Either way, he has the most overall between skill and strat.
I'm glad you got a good laugh out of it though... I was going to just move everything around into the most ridiculous positions but I decided to do it seriously.

We all know sandvich is the hardest class to play.