Sorry... but how can you make a comparison between Wagner and Kostner?
Wagner never had a real 3-3, she never won a major international title, she's not special artistically.
Kostner was doing incredible 3-3 (and even more like 3-3-2) since she was a teenager, she has always had top qualities in skating (speed, jumps, flow). That's what brought her to win several world medals, and later to become world champion and olympic medalist.
I actually like Wagner, I think she has some good spirit in skating and she is: solid.
But she doesn't have the talent the top skaters have. She just doesn't.
She may still win a medal if others fall at these post-olympic worlds.