MBA 2012 vs rMBP 2013 wifi speeds

[Bowcaps]

I have a 2012 MBA 13" and 2013 rMBP 13" and they are both connecting through an Airport Extreme, I have no real issues, its just using the Network Utility I have a link speed of 300 Mbit/s for the Air and 450 Mbit/s for the Pro does anyone have any ideas why there is such difference?

TIA

 

[Mrbobb]

Link speeds are theoretical maximums to be taken with a grain of salt. The 450 most likely is combined G + N.

 

[SoIsays]

Yeah, my 2012 MBA is 10mbps slower on speedtest.net than my friends the rMBP on my comcast 50down/10up.