You were saying....Seriously you've gone back nearly two months for that.
This statement was made months before the Pulsars first arrived and it was well know that the service was getting brand new single deckers and I imagine the confusion of getting double deckers was because a Sapphire Enviro 400 from another Arriva devision to show some important people about the features the Pulsars would have when they arrived.
Since then passenger numbers have grown so Arriva seem to be having a rethink about single deckers on this service and my be replacing them with double deckers.