ginobili is agile and quick. artest really doesn't do too well against lithe, quick players. someone like kevin martin/brandon roy will torch artest. against bigger, physical players, artest's D really shines.
artest is perfect against the likes of lebron/melo and showed he could take durant out of games. artest and battier shut down lebron in 2008-2009 one of the games, and i couldn't believe how good they were defending him. artest is a great match up against lebron. will he shut him down alone? nope. but it's more favorable than than people think it is.
you had decent points until you mentioned bosh being as good as KG defensively. i don't think you understand how soft bosh is. bosh is amare's level on the defensive end. no debate on that. he should be a SG to be honest, the way he plays on both ends.
KG is losing a lot of steps, but he's still a very capable defender down low. good reason why pau never had a breakout game in the finals.
yes, miami is going to be a handful. but let the season and post-season prove that. i personally think that wade as the lead man will torch it up, seeing how he doesn't have as much pressure to carry the team on his back alone.