Opticallimits

https://www.sigma-global.com/en/lenses/c..._24_70_28/

For Sony E & L-mount

The MTFs look SUBSTANTIALLY different (better) than for the DSLR variant. Strangely it's more light-weight but bigger.

DSLR:
https://www.sigma-global.com/en/lenses/c...0_28/data/

Mirrorless:
https://www.sigma-global.com/en/lenses/c...0_28/data/

The Sigma DSLR 24-70mm is so meh that improved MTFs are not a big surprise...