He might be on the decline but that also means he has way more experience and he also has a much bigger history of winning. And it's not even like Chauncey has seen a huge drop in his numbers, the year before last he posted his career high in scoring.
Yeah, I'm not debating that Billups is or isn't serviceable. He clearly is. The difference is that Billups is likely a year, (maybe two) away from retirement while Harris is in his prime and will likely get better as long as he has the minutes.
5.23, 7.8, 9.23, and 12.2
for
3.6 and 6.6
I like to look at this stuff for perspective, but lets not forget that 1) Billups likely went about 20 picks too early and Harris probably went about 20 picks too late. He should've been an early 5th rounder or late 4th, and Billups should've been a late 3rd, early 4th. I think there is a clear disparity between the players favoring Billups, but only if it is on a win now team.
Chauncey puts up the same numbers as Harris does on some of the worst teams in the league, while playing much better defense and shooting WAY better from long range. That + his championship experience and leadership puts him on a whole other level than Harris.
See, Devin Harris before he got to New Jersey was known primarily as a defensive PG. He just didn't bring it as hard because he played on a crappy team that needed him to do all the scoring.
That happens with a lot of guys (see Pierce, Ray Allen). I think on the Kings, Harris's defense would've been at or above Chauncey's level in pure ability, and we should see a marked improvement in him in Utah next season.
Sometimes 'being the man' is too much of a burden on a guy, and it clearly was for Harris. After he killed himself trying to fill that role for NJ in 08-09, I think he got a little burned out and jaded.