or losing to a team that executes better in a playoff setting, like the '04 Lakers, perhaps.
Regardless of Hollinger's reason for thinking the Spurs will regret not having Scola (and, frankly, I don't think it will be the kind of loss that most think it will be) he's clearly not saying that Scola has to be a top-20 player to help the Rockets (in fact, Hollinger says that Scola will be, in essence, statistically similar to Matt Bonner).
And you're flat, damned wrong to suggest that non-American players can't be top-20 players in the NBA.