Totally wrong.
Its the programs and the way they handle the mts codec on decode. Hacked GH2 footage goes beyond Profile High Level 4 in bitrate. Adobe and other programmes decoder is unble to read the hi bitrate data correctly - probably decoding it to the confines of the lower elements of profile. Adobe, VLC and the likes should look into it.
WMP users should dowload K-lite encoder pack which has a better decoder than Adobe's.