They are playing WOW with the same rule set that the rest of the NA and EU servers are as such are constraint to the same variables. As wow is basically subcontracted to another company to distribute it and change it in Aisia it is not the same race as it is not confide to the same variables. Really not sure whats so hard to understand about that... In Car racing there all racing cars no? So why dont F1 cars race vs Nascars ... there racing CARS arent they