I tend to think that Deron is still arguably the best PG in the league.
Yes, better than Rose. Possibly as good and/or better than Paul.
All-NBA team votes don't prove all that much, unless we're talking about outlier talent that is backed by hype or so obvious that even morons like Marc Stein can't deny. The Daniel Day Lewis standard? Within that, there are a few guys per decade that are automatics -- in the 90s, it was Malone and Jordan, for the 00s it was Duncan, Shaq (pre-decline, natch) and Kobe. But even within that group, the latter and more recent, it became arbitrary and questionable -- Duncan making All-NBA over the last couple seasons has been highly suspect, either as a talent evaluation or pure statement of the lack of such talent at the position. His making All-NBA 3rd team last year was a near disaster; the fact that he was All-Defensive second team is retarded.
But, also, and honestly, returning to Deron specifically, the NBA has a glut of "great" point guards at the moment, largely thanks to the new(ish) hand-check rule that has made perimeter defense a joke.
Sometimes I watch Rose, who I'm actually rooting for, and I ask myself whether he'd be anything more than Steve Francis without the softer rules. The sad part is the near-certainty of outcome through FT attempts in the next series, with LeBron and Wade shooting more than a prime Shaq.
On Rose, the Bulls are a very questionable offensive squad, which most use to further hype him and justify the MVP. But when watching and analyzing the Bulls offense, a point becomes so very obvious: the team lacks in shot-creation, either individually or through facilitation.
The former helps Rose's case as "the man", but the latter points to a player with lacking skillsets and arguable mindset positionally; as well, a general argument of what makes a truly great player and how Rose fits into that, whether he really does at all. Shot creation and manipulation of game-flow from that is a very big deal, and something that can be read in such way as to answer the question as to whether a player "makes his teammates better".
I believe that players like Chris Paul and Deron are still better than the other points in the league as far as high-level facilitation. Rose? Is often mediocre at best.
He's a semi-volume scorer out of the PG slot. Relative to the NBA's goals, this is a very attractive player.
But do I think he's clearly the better talent than Williams or Paul? No.
Names like Rondo and Nash are basically an I Ching argument on balance: one can't score and the other can't defend or, for that matter, play at a defensive pace or on a defensive squad.
CP3 and DWill are still right there and, on talent, are the best overall players at their positions. Both come with question marks -- Deron's mental state, Paul's physical durability -- but the skillset parameters still favor them by a good amount, particularly as Point Guards.