Oh, wow, NO.
The difference: most of the end-users have flash installed. But Acknex Browser Plugin? Not. Downloading and running the game is less work than downloading a plugin and restarting the browser (where you had 20 tabs opened) and then downloading the game.

Reminds me of one of those guys trying to sell their 3D stuff here in the forums. Some screenshots looked nice, but since the only way to see their models animated is with some Unity Browsercrapthingy, I decided to rather not buy their models.