Bichel is a great bowler for Queensland (see his past few First Class season stats), but what makes him a champion is that he would come in and get the toughest wickets (the guys who stood up to McGrath, in other words). From 8 matches for Australia against the West Indies, he has taken Brian Lara's wicket five times (by comparison, Shane Warne has also got Lara 5 times in 16 matches). While someone like McGrath or Lee would be used sparingly after the ball gets old, Bichel is the kind of player who can be successful bowling long spells against well set batsmen.
Also, he is loved by the Australian public for his genuine character.