Didn't Vasquez on a entire team of average players (Davis still blossoming) do the exact same thing while losing games/not playing defense and dominating the ball in NO? Most solid pass first PG's on a bad team that gets up and down the floor could average 8-10 assists (Kendell Marshall on the Lakers had 8.8 in 29mins of play) if they don't have to do anything else.
For me it's surprising to see, that people try to judge Rondo by using stats. In my opinion he is one of the few players, where stats only tell a small part of the story.
Rondo is not the "typical solid pass first PG". His game in not close to Vasquez or Marshall. His game is not close to people like Tyreke, Rose or Westbrook as athletic, scoring PG's either. His game is not centered around driving and dishing or playing 2 man pick&roll.
Rondo uses these tools, but his main strength is the way he is able to orchestrate the half court offense, by calling screens and cuts, using missmatches and forcing switches.
Most of his assists are simple passes that complete a movement performed by the whole team.
That's why he never clicked with Carlisle. Rondo needs to call out plays and direct traffic himself, to play his game. and when you call every play from the sideline, Rondo's strength is taken away and he turns into an average PG without a solid jumpshot. By playing his game he holds the ball over extended periods of time. That's indeed his main weakness, that needs to be adressed by Karl, if Rondo is supposed to coexists with a ball dominant, creative player like DMC.
But I think Rondo is smart enough to know, that DMC is not a mere finisher and he has to treat him differently than Chandler or Zeller.
Rudy (and Willie) is tailored perfectly to play with Rondo.
And from my point of view the concerns regarding his defense are way overblown. Last season our second PG was Andre Miller. You won't tell me, that Rondo is on the same level defensively. So even if we get the washed up post ACL Rondo some people try to make him, it's hard to believe, that our defense from the PG spot hasn't improved.
And with Collison as an aggressive on ball defender, that really gets into his opponent the situation in SAC is not that different to Boston, where Rondo played the passing lanes and Bradley applied pressure to the opposing primary ballhandler. Ben is able to guard big, ahtletic PG's too. So even if Rondo is a defensive liability, which I believe he isn't, we should be able to hide him quite a bit. Dallas with Monta wasn't able to do this.