Because TSN hacks the ITV broadcast to pieces! We get none of the pre race coverage, we are joined in mid sentence quite often, the timing of the commercial breaks is brutal and post race commentary is often cut short or is non existent.
The commentators on SPEED know when they are going to, and coming from a commercial break and fill us in on anything important that may have been missed. The ITV guys have no idea when TSN has left and come back. The pic in pic that TSN uses during the comercials is pretty much useless.
The other thing that attracts me to the American broadcast is Steve Matchet(sp?). His insight on the technical side is, for me, much more interesting than Brundles constant whinging about the drivers. Oh, and the ITV girl in the pits doing driver interviews...well. And, why do we never see these interviews? We only get audio. In fact, there are many times when the ITV guys are talking about something on screen that we are not seeing.
No, I'll take SPEED's remote coverage any day. If TSN were to broadcast the ITV coverage in it's entirety, that might make a big difference. It's not like we have much of a choice in the matter anyways. I'm glad that TSN doesn't block the Friday practice coverage that SPEED provides.
If I am able to watch live it's TSN (no choice, right). If I have to PVR for later I chose SPEED everytime.