Hello Dennis,
That is a point that I am criticizing with the MHG 8x42, that flat-field goes up to 80% of the field of view, that the SLC can do without flat-field!
The marginal areas are no better in the MHG than in the SLC, but they have a larger field of view, which is just one criterion among many others, if it were only about that you could also buy an old Asahi Pentax that 7x35 has even 11 ° degrees FOV.
I tested the MHG 8x42 against an EL 8.5x42 and the Swaro was superior in all optic respects, especially with the edge sharpness!
Again, I think the MHG is a decent middle-class binocular, but I cannot confirm that it would be on par with an EL, SF or EDG.
Andreas