That's a very nice looking beer, but I assume you don't mean that you poured it two nights ago and took the photo this afternoon.So not to be overly nitpicky or anything, but to judge head retention we do kinda need to know how long it was between pouring and snapping the pic.
It was taken approximately 2-3 minutes after pouring. I poured it, went to the bathroom, came back, and took the picture because I thought it looked nice and I was impressed that the head was still sitting on top just like the real Duvel. It also leaves lacing on the glass which I didn't take a picture of. I think there is something about their yeast strain that promotes the huge head, head retention, and lacing, because that keg is only on about 20 psi @ 45°F and real Duvel is carbonated to around 4.0 volumes of CO2. I have lots of other beers on tap with far less impressive head retention brewed with the same low oxygen brewing practices: Pre-boiling water prior to mashing, hot side antioxidant ascorbic acid added just prior to mashing, closed transfer after fermentation, keg refermentation. Nothing fancy or revolutionary.