^^ I like that P/B are an older team and I'm not sure what you mean by seen and done it; they're definitely not a team that repeats itself or goes for obvious choices - unlike some.
It is factually correct that they were closer to D/W than to W/P at 2012 Worlds (though they didn't do as well at the WTT). Also, the off-season turmoil in Canton may impact Zoueva's teams, allowing both P/B and W/P to make up some ground.
Which is true, but we also know how I feel about the marking of P/B at Nice. If W/P get the same level of generosity in London, I simply don't see how it's possible to repeat that.