FWIW I think the most revealing way to compare PGs is to look at the breakdown of their actual possessions. Paul has a slightly higher usage rate (about 2 possessions per 40).
Paul gives you about 37% of his used possessions ending in an assist, 9% in a turnover. 54% of the time he takes a high efficiency shot (60% TS).
Rondo gives you about 42% of his used possessions ending in an assist, 13.5% in turnover. 44.5% of the time he takes a low efficiency shot (50% TS).
Math, for math's sake (but with a grain of truth):
Suppose you get 2pts for an assist and -1 for a turnover. Over 100 possessions, Paul rates a 65. Rondo rates a 70.5. EDGE: Rondo
Now suppose you get 2pts * TS% when you choose to call your own number. Paul rates a 32.4, Rondo rates a 22.25. EDGE: Paul
Combined offensive rating: Paul 97.4, Rondo 92.75. EDGE: Paul
I'm a big Rondo fan, but in reality that doesn't quite do justice to the difference.
The part in
bold is not quite correct. TS% is not a measure of the efficiency of the shots they are taking from the field. TS rolls up Free Throw shooting as well as shooting from the field so is a conflation of the two skills that doesn't properly weight the value of either.
In particular, even a poor FT shooter who takes a ton of FTs (like, say a Dwight Howard or a Kendrick Perkins who gets hacked specifically BECAUSE he is a poor FT shooter) gets a big boost from it to his TS%.
A better measure for efficiency from the field might be eFG%, which measures efficiency from the field, given appropriate weight to 3PT shooting. Paul still gets an edge there, but it is not nearly as large: CP's career eFG is 50.8%. Rondo's is 48.9%.
I said 'might' be ... but circling back, that fails to account for free throws generated off of shot attempts. So ... probably a better measure THIS calculation would be to use actual point per shot efficiency, Points/FGA. For this, CP has typically scored ~1.34 points/FGA. Rondo has typically scored ~1.16 points per FGA.
This correction - which reflects that CP takes a lot more FTs/FGA than Rondo - ends up boosting the difference.
Also, an assist is typically worth about ~ 2.23 pts. Varies with the share of 3PT shots your team takes but let's use that for simplicity. A TO is typically worth the cost of your offensive efficiency over one possession, for an average team about 1.05 points. For the Celtics last year, that was a mediocre 1.03. For the Clippers, it was 1.11.
So re-doing you calculation. The final numbers will look a little different.
~145 points generated per 100 possessions used for CP.
~132 points generated per 100 possessions used for RR.
So, as I said, this makes CP look even better compared to Rondo in point generation.
But personally, I'm okay with that. CP is a fantastic, once-in-a-generation type of player and the fact that Rondo doesn't produce quite as much offense as he does doesn't mean Rondo isn't also a fantastic player.
Just for a third point of comparison, when you stick in the numbers for Russell Westbrook, you get ~120.
I did a similar calculation a couple of years back, over Rondo's first few years and at that time, over that period, the best point generators were clearly Paul, Rondo, D-Will & Nash. Rose only had 2 seasons under his belt though. His MVP season probably rates pretty high.
And of course, this is only about net points generated. This ignores rebounding and defensive value.