I don't think Smokescreen was supposed to have any JP Amazon exclusives (which Hasbro HK includes with theirs). Bluestreak and Prowl had a missile launcher each so that one could have a pair if you bought both toys.
Since there is already a complete pair from those two toys, and Smokescreen has different shoulder cannons that come with the toy, I'm don't think there were any exclusive extras for Amazon Japan and Hasbro Asia.