It seems to vary a lot between cars, I remember an E39 5 series I had back in the day that blew air out really cold and nothing I had was quite like it until a Jag XF I had where the air coming out the vents was so cold it physically hurt holding a hand in front and you had to move it. The air coming out the T6 vents is nowhere near as cold, but it's enough to cool the van down, it just takes longer. My current Volvo air output temperature is somewhere between the two. Hired a Lexus once when in the states and the AC in that was magnificent, went from sweltering 35 degrees and massive humidity to ice cold within 30 seconds of starting the engine.