No the R5 liek the R4 missions are Universal all contries and do it together, it fighting a NM in Fei Yin ( Well Its Really 6NMs with 1 main NM) but only 6 people can do it at once with a lvl 50 cap.
and from what i Gather 2 tanks 2 DDs whm and rdm would be the best strat so 2nd tank and rdm can pull the other NMs while the other 4 conectrate on the Main NM, after main NM is killed i think the other mobs then just dissappear i could be wrong about that part though
Mach - 70 Tauren Druid - Duskwood
Promanthia - 70 Blood Elf Warlock - Duskwood
Namas - 29 Orc Hunter (Twink) - Duskwood