The person i bought it from had both imported and smuggled ones. I asked him whats the difference and he said to be honest both are one and the same thing. Manufacturing date on smuggled tyres lies in december 2013 while the imported ones were early 2014. For imported ones, you get the proper warranty card with the tyres from the dealer whereas the smuggled ones warranty is just hand written by the dealer on the receipt.
Some were even selling the smuggled ones by saying they are imported. XM2 is more or less the same price, they are in competition with advan db.