Sorry I did this wrong, this was in response to BNM:
You probably don't mean it to be, but your phrase "oh please" sounds condescending; I would prefer if we discussed this issue in a more respectful manner.
I'm not sure how DRtg is calculated; I will admit that I based my opinion of Jack's defense on the fact that draft express scout thought he was the best defensive PG coming out in 2005, the fact that he has the physical tools and the energy, and now the experience, so I would expect him to be a very good NBA defender, but perhaps he is not.
I am sure he is not as good a distributor as Miller, but he is a better shooter, especially from the three point line. There is also the leadership issue, not sure how that shakes out.
And the intangibles of whether each makes the rest of the team better, which isn't always measurable by assists. I have to admit, if he truly is a bad defender, then you are correct in your assessment.