
The game is about rhythm not notes. So, although he is right to note that you don't need to listen to the music and can look at the screen - as he also noted when he tried to play the game and couldn't, that doesn't actually work very well as a strategy.
To play the hardest pieces on the highest level won't be achieved by watching the screen and trying to press the buttons as the coloured circles fly past the bottom. If he tried to do that no wonder he struggled.
You need to learn the buttons and play them in rhythm, which is a question of listening to the music as you play. If you play in a band you must have played in time with the others? You still need to be able to see of course - because you need to learn the "notes" - but once you've learnt them - and most of the pieces are rock, so it's the usual intro, verse, chorus, verse, solo, ending repetitive stuff, it's not random button presses like a dance mat, you can play without looking...I suspect most will be somewhere inbetween, they'll know the piece well enough that a glance at the screen will remind them of a much larger section than "which button is about to reach the bottom?" but they might not remember the piece without any visual cue at all.
If you play in time, play relaxed and know the song, there's no sense of rushing or of trying to anticipate when and what to press next - at which point what looks incredibly complicated and would have someone with lesser skills frantically struggling to "keep up" and hit the correct buttons, becomes easy and you start to notice that, far from having to rush, you have more time than you imagine. Some aspects of that are the same as playing real music on a real instrument.
Of course, GH3 doesn't ask that you play the notes well, there's no tone to worry about and there isn't a variety of technique either.
It seems that the author, [and several of the guitarists commenting] merely hoped that they might excel at GH because they played guitar and then, when that fails, decide that it's not the same skill set - moreso when the author decides his guitar training make him suck more than most at GH3.
Talk about making an excuse for not being able to do something :) "It's because I'm too good you see...if I wasn't I'd be much better" <g>
I wonder if there's some green-eyed envy here too. When the article starts with the suggestion that the players should all be embarrassed playing in public. I note folk that can play the hardest pieces on GH3 seem to get some positive attention when they play in stores or at xbox events [not the least from people who have played it and see that it requires skill to do well]
The kind of attention that an average run-of-the-mill guitarists probably won't get. [although guitarists with chops still do....a pity then if the author's training in the blues scale now make playing like Steve Vai and Dragonforce much more difficult than for a non guitarist like the ones you get shredding on youtube? <g>]