You also have to keep in mind that good pg's are more few and far between than swingmen. I would say that Rudy Gay is a good swingman and Rondo is a good pg. There is a major drop off between the good pg's and the average ones, while the dropoff between good swingmen and average ones is pretty minimal.
The good young pg's are : Paul, Williams, Parker, Harris, Rondo, Calderon...running out of names already...could go on and on for good young swingmen
anthony, james, roy, gay, wade, joe johnson, caron, iggy, garcia, durant
There are a lot of them and that has historically been the case, so unless you are getting a franchise type player, which Roy may be, then you take the good pg with the potential to be great. I don't see the type of leadership in Rudy Gay to be able to say he's a franchise cornerstone.
At this point, I'd put Roy at 1 and Rondo at 2, but my opinion on that may change soon enough. I also like Aldridge, but I haven't seen his defensive skills enough to truly have a feel for him.