If you have 2 products, 1 pirated and 1 real. Even if they are 100% identical, the real one is better as in has greater value.
Late, but on second thought, if they are
100% identical, how do you figure out which one is which ?

More seriously, luckily they are hardly identical. In the fashion industry which has been for long a prime target, copies have in many instances contributed to the popularity (or popularization) of the original products, and generally the related brand.
I must admit I have not read the initial article, but when you think about it, I would be very curious to know how many (pirated) copies of the latest windows version are being used right now and this compares with the earliest version ratio? In which sens would that have evolved?