Personally, I think fly fishing over rated, I learned in half an hour to do the basic cast and caught a 3lb chub the very first time I tried it. I had been told for years it was very difficult and shied away the same for carp. I went on and fished some overgrown streams like Grayson and some skill is involved but it is only stealth and finding visible fish. Flick a fly at them and those trout virtually give themselves up, they attack anything in the water.
Now, match fishing, how long would it take me to learn that and win anything, a long time I reckon. Some of the things Grayson's describe as making it easy in fact make it difficult., you don't get to seek out fish and catch them and then find another one and catch that; you have to be lumbered with what is in front of you and then get the best out of it, get the fish to feed the best you can, that takes a lot of thought and skill. I have never tried it but it looks like you need to learn a lot more than fly fishing to me.
I don't want to say one is more skillful than the other, they all have their different demands but they all have their stars, people who just take more time and learn more and they are usually the most successful ones same in any sport or hobby.
Even commercials have their stars, you often find the same people catch the really big fish, they have taken the time and learned to really fish that water well. I blanked on many a commercial, usually the mixed lakes, and had to learn how to get the best out of them but I was never as good as some of those.