Sacramento vs. the Lakers comes down to whether the Kings can contain Roy and Curry more than the Lakers can contain Boozer, Randolph, and Rose.
For a large part of the series, LA is going to be forced to have Bargnani and Michael Beasley guard Boozer and Randolph. There's just no way LA can match up with that.
In terms of defending Roy and Curry, it's one of the best back courts in the league. However, Rose is an underrated (and very good) defender, and both Courtney Lee and Francisco Garcia are good defenders, as well. They'll slow down Roy and Curry much more so than Bargnani and Beasley will slow down Boozer and Randolph. (Even for those who think that pick-and-roll defense will be an issue, who is LA going to run the P&R with? Beasley? We all saw how he choked under pressure last year, and how much Miami valued him by dumping him for peanuts.)