[qasdfdsaq]

Ah. Well, strictly speaking 65 and 72.2 are the same MCS mode, one has a short GI and the other a (standard) long GI. 65 is really the standard minimum though, as the short-GI mode required for 72.2 is "optional".

[pedantic]P.S. I assume you mean Mbps, as MBps is also wrong [/pedantic]

Wireless-N does have a ridiculous combination of transmission modes though, which make it a wonder that Minstrel-based rate-control methods work at all. There's a total of 32 different Modulation and Coding Schemes each of which can be used in either 20 or 40Mhz mode both of whom can be used with short or long GI, plus an optional "extreme long range" MCS that can only be used in 40Mhz but either GI option for 130 different options in total.

Anyway, I digress. 72 (or 65, without the optional short-GI feature) is indeed the minimum most phones, tablets, and laptop cards are at least capable of, though the majority of laptop units are usually 2x1 (72 send, 144 receive) at a minimum.