While I don't own a Fujifilm 56mm f/1.2, I have shot with one for a while and I don't really have any complaints about its sharpness.
This is a full-size 16 MP OOC JPEG shot with X-T1 and 56mm at f/1.2: http://photo.torba.com/images/pavel.urusov/f/gI5QLQoLCnsuemLMrod5.jpg
As you can see, it's sharp. Maybe even too sharp because it shows all the pores etc.
This one was also shot at f/1.2 and converted in Lightroom, and it's extremely sharp: http://photo.torba.com/images/pavel.urusov/f/e5rz4Eayund6m2g7Udyc.jpg
I think you have a misfocusing issue. The eyebrow in your shots looks sharper than the eye itself.