Defining the output quality and resolution of a 3D printer is a subtle thing. Sticking to DPI, laser spot sizes, and layer thicknesses is somewhat akin to comparing clock speeds of modern processors. The question is a lot more subtle than that.
When we talk about minimum feature size, we are giving a rough guide for the finest pillars or walls that you can print (see the fingers of the Neptune figurine in our photos). By this metric, the Form 1 is comparable to the best high end SLA and inkjet machines, and well beyond any FDM machine.