It is no big deal to beat such a player if you are a good player. Beat a player in a tournament to win it is a bit of a deal. Try to beat such a player a match. I understand player like Kasparov are awesome. Seems to me there are about fourteen top players of all time. Kasparov maybe the best of the best but he is not unbeatable. There is no reason to doubt that a top player in here beat Kasparov in a single game.