Originally, I had planned to type out a long paragraph about delays, speed boosts, advantages and disadvantages but this about sums it up:
http://psychology.about.com/od/pinde...ebo-effect.htm
Every iDevice user is a lagger. Every PC user has a speed advantage. Is it all necessarily true? Not exactly. Those are jusy stereotypes you hear a lot. I think a major reason as to why people find PC players to be better is because if they've been playing this game for 10 or so years on a PC, they would be very familiar with the controls and mechanics of sparring on a PC. Now if iClassic were out for 10 or so years and people have been sparring for a long time, you might say that they have an advantage.
Are Internet connection speeds and delays regular factors of sparring? Of course they are. But idealy if you threw a PC player with an iPhone player in the same arena using the same speed, the better player would come out on top.
So again, why are many PC players considered to be "better"? Experience and familiarity with the controls. Graal originated on the PC, so they've been using a PC for a long time. I'm not saying because they're experienced and familiar with the controls makes them virtually invincible at sparring. Anyone can win so long as they know they're able to.