Nikon z 70 180mm f 2 8 vs tamron 70 180mm f 2 8 di iii vc vxd g2?

Here is what the site says about that.

From Tamron 70-180mm f/2.8 Di III VC VXD G2: Tamron 70-180mm f/2.8 Di III VC VXD G2: A zoom lens by Tamron for Full frame cameras, 70-180mm f/2.8. Specs - Maker: Tamron - Focal length: 70-180mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Sony E, Nikon Z): as marked, 70-180mm. - On APS-C (Sony E, Nikon Z): like 105-270mm on full frame; f/2.8 ...

From Nikon Z 70-180mm f/2.8: Nikon Z 70-180mm f/2.8: A zoom lens by Nikon for Full frame cameras, 70-180mm f/2.8. Specs - Maker: Nikon - Focal length: 70-180mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On full frame (Nikon Z): as marked, 70-180mm. - On APS-C (Nikon Z): like 105-270mm on full frame; f/2.8 gives about the depth of field ...

Quoted from this site's pages.