Both did fail my fog test. I ordered them both last year for my brother. Both were sitting outside from delivery for a good amount of time in 15 degree weather. I took them in where it was like 75 and both fogged up for a few min. All my 5 or so Vari X III's I have had, a few vari-X II, and the one VXII I have passed this with flying colors
I should know better then to argue optics with you
but here goes. I am presuming you mean the scope fogged on the outside and not the inside. If you mean outside of the scope i fogged up every scope I ever owned whether Leupold or whatever on really cold days because I breathed on it when I brought the rifle up. From what I am told having Rainguard on the lense coatings circumvents this. I think both scope lines(3200 and 4200) have outstanding optics but the 4200 get a little clunky for my tastes ie: too long and too heavy but they are a very good value in spite of that and they have top notch glass.