It does seem odd, until you consider that the team has had a bottom-10 offense in recent years with Rondo running the offense, even when he had Paul Pierce and Kevin Garnett as primary scoring options.
The improved offensive rebounding and inside scoring with Sullinger, Humphries, and Vitor will probably help with that a bit, as that was one of the major reasons for the team's offensive ineptitude in recent seasons.
But just keep in mind that the only time Rondo has been the primary ballhandler for a really productive offensive attack was early on in the 2011 season when Shaq was healthy and scoring 12-14 points a game in the post.
I dunno if this is true. In 2011-2012 season I know the offense went to 17th (which is middling) from a 26th offense when Rondo was on the floor. Even in the first two months last year the offense was actually top 10 when Rondo was on his assist streak. So he is very capable of running a great offense. Especially if the pace is greater and the there are more possessions (unlike the half court and slow, low rebounding, strong defensive teams of the past).
Pace doesn't matter with offensive efficiency except to the extent that you get better shots because you take your time. It's all about what you do with the possessions that you use.
In any case, based on the numbers you list, the offense was still average to below average with Rondo.
Pace matters in terms of efficiency in that you usually get better opportunities if you get a shot before the defense is set. And the main reason the Celts offense was below average with Rondo was very bad offensive rebounding. Most of our teams were well above average in terms of eFG% and TS%. He gets the team good shots, and they don't have a ton of trouble scoring.
I think we need to be clear about what the term 'pace' means.
The "pace" statistic is simply the measurement of possessions per game. It is not at all, by itself, indicative of how fast you are playing on offense.
From a defensive standpoint, a low pace number is _good_ because it means teams are taking longer into the shot clock to get their shots off.
From an offensive standpoint, a high pace number is good because it means you are getting your shots off earlier in the clock.
These things cancel each other out. So the number, by itself doesn't tell you anything. A high or low pace number isn't necessarily good or bad.
Though, as far as history goes, teams that play at high pace numbers in the regular season do not correlate well with deep playoff runs.
Of Celtics teams, in particular, historically we have made it to the conference finals only a couple of times with a team that was ranked high in the pace rankings. The vast majority of our conference title contender teams have been at or near the bottom in pace.
I think that correlation is driven mainly by defense. The ability to slow down other teams and take away their efficiency is a big part of being a championship team. Thus, that tends to result in a slow overall 'pace' number, no matter how fast you are scoring on offense.
If you want to look at how fast just our
offense is playing, better numbers to look at would be:
Fast break points per game: We are currently 20th in the NBA, scoring 11.5 fast break points per game. In 2012-13 we were 16th. In 2011-12, we were 19th. The year prior, we were 22nd. The year before that, 16th.
Fast break efficiency: We are currently 18th in efficiency on fast breaks, scoring 1.597 points per fast break possession. The prior two years (going backward in time) we were: 15th & 21st. teamrankings.com doesn't have this stat for prior seasons.
It should be noted that the rankings for the above have a broad middle. There really isn't a lot of difference between being ranked 10th and 20th. I would categorize the Celtics as having been (and continuing to be) pretty much 'average' when it comes to fast break scoring.
Shot clock usage: I don't have rankings here, but we can compare to ourselves in prior seasons. The 'secs' indicates seconds into the shot clock. I.E. 0-10 means shot taken in the first 10 seconds of the possession. The percentage is the share of our shots being taken in that point in the clock. eFG% is almost always higher earlier in the clock so the more shots early in the clock the better.
secs 13-14 12-13 11-12 10-11 09-10 08-09 07-08
0-10 38% 37% 35% 34% 36% 36% 36%
11-15 24% 26% 26% 24% 25% 24% 24%
16-20 22% 23% 23% 26% 24% 24% 25%
21+ 16% 14% 16% 17% 16% 16% 15%
So, a tiny up tick in early ('fast break') points the last couple of seasons, but no major change in shot-clock usage profile.