They didn't get lucky. They won the series in 6 games. They outsmarted the Suns in every aspect. They used mental warfare against the likes of DAntoni and Amare, and both took the bait. Amare was more concerned with crying about this and that, instead of playing. Oh and the Robert Horry thing, Nash made it look worse than it was, with his masterful flop. Nash got his team all riled up, Bell went at Horry making it an altercation, and then those Super Geniuses Amare and Diaw left the bench to get into the fray. Horry used psychological warfare and the Suns lost that battle easily.
It isn't about luck as much as it is about mental toughness, experience, and basketball IQ....and the Spurs destroy the Suns in all 3.
Also, in games 5 and 6, the refs stopped buying into Raja Bell's flopping and flailing act. He was no longer getting those bogus calls and he became frustrated. You could see it in his play.
Steve Nash is not known for defense. What happens the two times he decides to play in your face defense? He gets a busted nose (nash initiated the contact) and a knee to the sac (not bowen's fault that his knee is the same height as Nash's jewels). He picked the wrong time to try and pretend to be an on the ball defender that is for sure.
BTW, a great defense beats a great offense 9 out of 10 times.