I just done setting tether options because i did fresh 4.2 install.. And guess what my N7 now streams youtube in HD while tethered with GNex. Did it do that before? I know that some clips can be played in HD over mobile network but they have to be less than a minute long. But i loaded good 6 minute HD video.
Btw both run 4.2
Btw both run 4.2