I think the meat of the GTA issue is ho's, pimps, violence, swearing and murder provide wholesome family entertainment, but as soon as you throw in a pixelated nipple and what is essentially a rythem based mini-game, suddenly its unappropriate for parents.
I'm assuming it was an Americain TV station, which explains everything since I once saw a movie trailer that had the quote "best film ever" when the full quote was "Could have been the best film ever but it sucked. Seriously. I mean it sucked like that 'h* in GTA."
People who call me 'paranoid' are probably in on the plot.