I never put my XRS up against your Acura. There was never any doubt or statement on that.
But you come to this site trolling and spouting Honda-this and Honda-that. You have to expect to be bitch-slapped.
As for Lexus vs Acura...even the automotive industry doesn't classify Acura as real or true competition for Lexus. Lexus is luxury. Acura is not.

Facts as presented by government registration (Polk) and Industry registrations (DesRosier) which lumps combined Honda and Acura against Toyota only. Lexus sits in it's own class with the big-boys.

The difference, while fine, tells the story between price, features, and quality. Oh yeah...Lexus quality. Head out to Cambridge Ontario and discuss QA. See if Acura has the same level when 95% of the RX is built by machine exactly the same way...every freaking time.
As for timings, I have seen hard copy evidence of a stock XRS running 2 back-to-back 1/4 mile times of 15.1sec. So if exagerated, they're conservative estimates that that. Too bad the woosie doesn't want to post his time here...but I don't blame him since it would entice another troll to this site.
Smoked is as smoked is. All things the same, a stock SI cannot beat an stock XRS. Period. Case closed. Now run along back to Honda-ville.