Yeah, out of all the West contenders, the Spurs are least effected by the Shaq and Gasol trades. The Spurs play best when they don't have to go small.
However, it's kinda scary to think the Spurs' championship hopes ride on Horry. If Horry can defend Gasol and Stoudemire and then hit threes on the other end, the Spurs will have no problem with the Lakers or Suns. If he can't? It'd be a lot harder for the Spurs.
Just in case the Spurs might try to go out and get a bigger, thicker big to be able to throw at Shaq and Bynum. Even if it's just PJ Brown or Dale Davis, the Spurs need a big with some strength. The West went from small ball back to 2003 overnight.