To be fair, they're not $360 wheels, they're $360+400=$760 worth of wheels. The $250 a wheel Rota's didn't travel here for free.
That's a very good point in regards to the design of the rims/spokes making it more prone to failing. I love the look of these wheels (on a Holden, not a zed!):
but it looks like it wouldn't take a hit well.
In regards to your "knock-off"watanbes, I could be wrong but I am pretty sure watanabes are made in Japan (Ben, confirm?), not China so I question your claim that they are made in the same factory. Or are you just saying that they are made in the same factory as the full BS fake watanabes with the three bird symbol?
Another question is why not just buy Rota RKR's if you wanted the watanabe type R look? Rota has a legitimate presence in Australia and an avenue should anything go wrong. I suppose if the size you need isn't available in Rota's.
Also, if you are racing with these wheels without any issues, that's good enough for me !