Marvel allowed Cornell a great deal of lee-way in MI:13, don't they? They just allowed him to *show* the entire English Parliament dead. Of course, as a US company, they obviously don't care that much, but it's like having Congress dead on-screen. In an Ennis or Ellis piece, sure - you have the President humiliated every second panel. But in a mainstream Marvel comic? That's pretty ballsy.
I have to say, more than anything else, that final page with Parliament slaughtered shocked me the most.
And how typical, Scotland being the last bastion of the UK. Some people just can't go down without a fight.
MI:13 started auspiciously. Vampire Invasion has pretty much cemented MI:13 as one of the most consistently entertaining and dramatic mainstream superhero comics out there.