Last two months - Stanton: CF: 46.7% GF: 56% Sbisa: CF: 45.9% GF: 37%. Sbisa is crap, and if Benning qualifies him at 2.9m, he's a joke. He's not worth 5x Stanton's salary, and he's not worth 0.65 or whatever of Garrison's. He's worse than Shane O'Brien.
Most of these last two months saw Sbisa playing against second line opposition while Stanton was primarily playing third/fourth liners. So,along with Sbisa's superior shot%,14% more time on the ice against better opponents means Sbisa is a lot better than the caricature you painted.