Even disregarding material, it is literally less efficient due to transmission losses, and it’s only “wireless” in so far as you have a wireless dock to drop your phone on that is then attached to the wall just like a regular cable. The only thing it does is make it so you don’t have to plug a cable in or use a magnetic cable attachment, but there isn’t really any convenience gain over just having a charging cord especially if you have a super long charging cable for your stationary spots in the house.
Even disregarding material, it is literally less efficient due to transmission losses, and it’s only “wireless” in so far as you have a wireless dock to drop your phone on that is then attached to the wall just like a regular cable. The only thing it does is make it so you don’t have to plug a cable in or use a magnetic cable attachment, but there isn’t really any convenience gain over just having a charging cord especially if you have a super long charging cable for your stationary spots in the house.