I am sorry but I get to set something straight about the RL. The RL ain't selling well because in the NorthEast region it is superior to RWD in the snow.
Who in the hell would buy a >$40k car to drive around in the snow? Most people that have $$$ to spend on a RL probably have SUVs. Nobody buys luxury sedans to drive around in the snow?? The LS and Q have LSD, traction control, and stability systems that are more advanced than the one on the RL. I have driven the RL in less than a foot of snow and I wont do that again. The damn VSA light stayed on and it either cut fuel or applied the brakes constantly (can't tell what was happeneing). If a RWD car (LS and Q) can't make it through the snow I doubt the RL could. And who would risk wrecking a premium sedan by driving it around in salt\snow covered roads.
Now that I let that go, I can tell you why the RL out sells the Q45. The RL is still living off the name of the Legend. The Legend was a great sedan that started it all, but now the Legend is exactly what it is........a Legend. Everybody knows there are 3 japanese luxury brands, Infiniti, Acura, and Lexus. People know what the LS and Q are, then they remember the Legend and go check out what Acura has too offer. WOW they offer a car, similar size, significantly less power, but for $10-$15k cheaper, what a deal!! The RL doesn't has the standard features that should be seen in a luxury sedan (leather, heated seats, trac control, abs, etc.) but doesn't offer things like (V8, recling rear seats, AC seats, vibrating seats). The RL looks good to buyers because of price and the fact that most compare them to cars that cost way more.
In my eyes the RL doesnt compete with the Q45 or the LS430 or the M45. The RL is on the same line as the GS300 and G35(fully loaded).