BitTorrent Facilitating Illegal File Swapping?

From the MPAA:

BitTorrent
Facilitation Illegal File Swapping of Star Wars On Day of Opening

It's interesting they pick BitTorrent as the tool that facilitates the illegal file swapping. Why not pick a technology like XVid or DivX (which was most likely used for the encoding), or a technology like apache (to help you get the Torrent), etc. Also, they didn't mention other P2P technologies. I found that interesting.