How come your character information only show lv 26 MRD tho?

but anyway to answer your question. Some party require war to go mrd in T8 and T9. but it is "not necessary". War can do the task also. If you ask if it is better or not, then yes, it is better as MRD. Just like when you solo, people would say MRD also better.

So in party, you play class a little bit depend on situation, and when solo, if you bother, then you can also change to class to be more effective.