FlyerAl must have shifted his flying preference to WestJet!
Seriously, based on x% complaining (weather, time, service) on any service, and the shift of load from AC to WestJet, a good (bad?) portion of the statistics is merely a shift from supplier A to supplier W of those who will make official complaints.
Don't want to seem pat about it, but no one at AC should be grinning about it just yet. What does help is the thank-you's that some staff are now dispensing, which also helps lower the static level.