|Pictured: the complexity of the AV system|
|Pictured: Gratuitous bar graph|
So, as you can see, there will be more marginal seats under AV and will increase the power of the average voter. Admittedly, it's not a vast improvement, but it is a substantive improvement on what we have at the moment.
And, conveniently enough, the Voter Power Index has reprocessed the data so you can see the effect it would have in your constituency. It only takes about 20 seconds so please give it a go.