Well, the displacement of the two cars are almost the same. 3.5 liter vs. 3.6 liter
Weight of the Maxima is 3245 lbs. (looks like a fifth generation Maxima) and weight of the Porsche is 2906 lbs.
The VQ35DE is a normally-aspirated engine, so if he beat a Porsche that is lighter by 300-ish pounds, I am guessing he went with a dual turbo stage 2 or stage 3 set up. And, he might have a NOS injection kit that is triggered by a floor pedal switch when in WOT (wide open throttle).
I don't know why someone labeled it as JDM because he was in a left-hand drive Maxima.