haven't seen either of them, but the first oughta look like sander's pride with longer petals. there are two versions of sander's pride floating out there, one with regular stonei (bolder and with better color) and the form made with platyphyllum, formerly stonei latifolium, which is lighter in color. that one has been renamed something, i forget.
I can't imagine that viet x roth won't be an improved version of Delrosi. Hopefully it won't be as hard to bloom (hope roths wasn't the pod parent).