Yes, its counterfeit, sorry to say. The PCBs are poorly cleaned out, wrong design and since you can easily obtain the Hakko 936 schematic and photo of the PCB, the differences are clear. Here is a subtle difference only a real 936 owner would notice easily:
Your photo of the soldering iron cradle:
The real cradle. The idea of Hakko was that the sponge doesn't get soaked in water, but stays damp. The circles serve as water reservoir yet keep the sponge suspended above it. To dampen the sponge you simply push down for it to pick up more water or if you still have the center circular piece, you insert it into one of the circles to keep the big square sponge connected to the water. Those subtle little items that Hakko thinks about make Hakko, Hakko. FWIW, the schematic of the true 936 is fairly easy to copy, its old technology. But to save money, some clones don't bother, but some do!
More detailed comparisons of other copies vs original:
http://www.head-fi.org/gallery/album/view/id/21715/user_id/168345