I'm a little curious about the stats, actually. Numbers were something conspicuously absent from both campaigns - preferring instead to come up with bare-faced lies*, ad hominem attacks and "won't someone please think of the children!!!11".
AV would only come into play in any situation where no candidate garnered more then 50% of "valid" votes (spoiled votes are apparently no longer valid ones) cast in the first count. Let's be kind to FPTP as suggest that a candidate polling 45% or higher in the first round under AV would likely mop up enough other votes to win. To how many constituencies would AV have actually applied in the last election?
I know Cameron polled 58.8% in his constituency (Witney), Ed Miliband polled 47.3% in his constituency (Doncaster North) and Nick Clegg polled 53.4% in his constituency (Sheffield Hallam), so they're all clear under either system.
*My favourite bit of the whole thing was when one group of liars threatened to sue the other group of liars for lying. How adult.