> "VAE: WAN2.2-VAE" so it's just a Wan2.2 edit

No, using the WAN 2.2 VAE does not mean it is a WAN 2.2 edit.

> compressed to 7B.

No, if it was an edit of the WAN model that uses the 2.2 VAE, it would be expanded to 7B, not compressed (the 14B models of WAN 2.2 use the WAN 2.1 VAE, the WAN 2.2 VAE is used by the 5B WAN 2.2 model.)