i own both and i would beg to differ. i do think they're both the same quality with the af100 looking softer due to the OLPF. i do much prefer af100's control over gamma and color.Actually the GH2 has been tested to have less aliasing/moire and slightly more resolution that the AF-100. It's just better down-sampaling. Better tech in the GH2.
And there is just no comparison to the all-I 175mb/s hack. It's just amazing. The AF-100 is probably a better "production" camera. But the image is nowhere near the hacked GH2.