I'm not sure but I think I remember wimax uses the same modulation as wifi, OFDM. While Rev A uses 16-QAM. Which in my experience has proven to be more reliable.
I don't expect wimax to be great because of this. Plus who knows if it's going to have QoS implemented or not. -- You can't make all the people happy all of the time. But it should be common sense to shoot for the majority.
