i was frequently asked by customer that why E600 wave 2 product doesn't have a 160MHz channel width to provide higher throughput. i understand that it will come soon on future firmware. For a sales person to answer this, any suggested answer to customer in order to counter this question?
I would say that even if 160MHz channels should almost never be used anyway. Firstly we have a limited amount of spectrum, so with a 160MHz there are only 2 non-overlapping channels. So you could only deploy 2 APs without Co-Channel Interference.
Secondly there are very few clients that support 160Mhz wide channels anyway, so even if you were to deploy it you'll likely not have a client that can get the benefit.