Depends how much steel you use to reinforce, and how thick the deck steel is to start. That one uses 2x2 steel tube, mine uses 2x3. Mine uses 2x3 side to side and front to back in a grid. That one uses bent sheetmetal front to back, and to bear lifting forces. I'd stack mine up against that one any day, and would also argue that the quicktach plate I used is much stronger. Not to say that one isn't stout, but $4K worth more stout? Not a chance.
And of course you can't see the size of the gearbox, motor or motor mount in that picture.
I designed mine with easily removable, extra heavy duty wheels up front to use to take the load off the machine boom and hydraulics when I'm reclaiming flat ground. Don't see that there, either.
Your money, spend it how you like.