Yeah, you would think, but it just isn't so. It appears Lexus has "tuned" the RX for the soccer mom crowd. I've driven one for a day (loaner from the Lexus dealer) and aside from it having this really cool place for my wife to put her purse (female design orientation?), it's just a small(er) cross-over with not much going for it IMHO. Lots of bells & whistles though. Very noisy on the freeway too, which is a big negative for me.
We have a '08 GX470, which is a totally different vehicle.