Here comes induction-gate:
http://www.worldpronews.com/50598/1180/0/00f578ff994b678d26a4c2e68a70a394ac7842f2
That article seems to indicate that wireless charging somehow uses more charge cycles than wired. I don't think that's right, if that's what they're saying. Charge cycles will be the same wireless/wired.
Is it more stress because it's always charging? Maybe. Some rapid wireless chargers do get hot as X users have reported. The slow wireless charging gets warm but not hot.
I don't think users will see a difference doing slow wireless over a 2 year period.