I'm not sure. I guess not as the code would be very different from the original (different language/platform).
"it doesn't compete with the actual product since it doesn't work on mobile"
I don't think this is true. Now people have a choice - pay for the iPhone app, or play it on their computer for free. Most people will probably never know about this version but I think it is still a competitor.
The game navigation is very different though. One uses a keyboard and the other tilting of the device.
Since the game itself is not original but rather simply leverages new functionality of a device to create a new game play I would say that their market is therefore limited to those categories of devices (ie. mobile with accelerometers of giros).
"it doesn't compete with the actual product since it doesn't work on mobile"
I don't think this is true. Now people have a choice - pay for the iPhone app, or play it on their computer for free. Most people will probably never know about this version but I think it is still a competitor.