Jeff's logic is very similar to mine. The deuce returner does see more points. There are pluses and minuses either way (return consistency, whether the server can exploit whatever weaknesses you have, what side do you volley better on, who has the better overhead, etc.). In the end, you have to simply figure out which way you and your partner play better.
For those who stick with "the key points are on the ad side"... Would you rather have your better returner receiving serve at 40-30 or have your weaker returner receiving serve at 30-40?