When key starters go out, teams generally play good ball for a couple games. This is usually attributed to the team "picking up the slack" for the missing guy or guys. Remaining starters step up their game (as Brad and Mike have done, getting more aggressive offensively) and the bench players bring a lot of energy, trying to prove their worth.
This happens with most teams. The Lakers won 3 of 4 games last year after Kobe went down with a badly sprained ankle (4 of 5 if you count the game that Kobe left before halftime) before dropping 3 straight.
The short answer to the question is: No, the Kings aren't better without those guys.
They beat a slumping Clippers team, although their hustle and energy was an improvement. It wasn't as if they beat the Pistons in Detroit, but there was some value to that victory. On the other hand, almost choking away a 15 point lead at home against a bad Boston team is not a feather in this team's hat. It was a W, which the team desperately needs, but it wasn't any kind of statement.
The Kings need Bonzi's toughness back. And though I'm hardly his most vigorous defender right now, the Kings either need Peja back or they need Garcia to do two things: take better shots (and make them) and cut out the stupid mistakes.
Or maybe starting Martin and moving Wells to the 3 would be a good thing. I suggested as much in another thread. But I don't think you can do that unless Peja is traded. He is Petrie's best piece in terms of trying to improve the team. Benching him hurts that process. And if the team doesn't intend to move Stojakovic, benching him only guarantees that he'll bolt at the end of the season, leaving the team empty handed.
This team needs a shakeup, but a lineup change isn't going to be enough. . .