I think there's an obvious practical concern, in that having 325k people watch your execution would probably be seen as an end in itself to whatever the MMORPG

I think there's an obvious practical concern, in that having 325k people watch your execution would probably be seen as an end in itself to whatever the MMORPG version of internet trolls is. So as a deterrent to cheating, this seems like it might be counter-productive. But its pretty funny, and as a PR stunt for Guild Wars, it certainly works as intended.