Why can't Spur fans be alittle upset that an ex-spur is taking ideas from his old coach and using them with his team? Me myself, I do not care, but I could see why Spur fans would be upset.
I don't think there's a monopoly on knowledge and I can certainly understand that if a particular strategy works for a team that has great success, it would be copied by all other contenders to the extent possible.

I think there's a quantum difference though, in terms of the players involved. We'll see if Dirk is the sort of player who can dominate a game without putting up big numbers; we know that Duncan is that sort of player. We'll see if the Mavericks can slowly build to a playoff crescendo by limiting minutes early, even at the cost of losing games; we know that the Spurs can.