As an owner of both platforms that also lives in phoenix, I can say that the problem starts with the fact you’re in phoenix. The dealer cars are sitting in the sun in a parking lot all day every day. Add to that the fact that the interior of the L is much larger than the WK2, so you have more volume to cool. And then you’re likely getting in your WK2 in a garage where temp is maybe 75-95 and driving a car with AC on max for a while and acclimating to it on your drive, then immediately jumping into a vehicle that’s 140 in the interior and wondering why it’s not the same temp as what you just got out of within a few minutes.Yes I turned it all the way up to the highest setting. Test drive another one today. I think the air cabin filter may be slowing it down. It’s cooling down in Phoenix so it won’t be as much of an issue.
The only knock I will say to it is that the physical vent sizes are actually smaller too, which probably moves less air.
I thought the same thing when I first bought my L. You know when I noticed the immediate difference? When the vehicle sat in my garage overnight and I drove it the next day. My wife and kid complained about being too cold in it the next day.
Long story short - you just need to give it more time to cool down, you’re cooling much more volume and it’s too hot out for that.