Yes, it does say a lot about the edge resolution because that is what most people see. The relative difference between on-axis resolution and edge resolution is the % blur. How are you measuring the edge sharpness? You need to compare your HG 8x30 with the new M7 8x30. The new M7 8x30 is a much better binocular than the older Monarch 7 8x30. You might trade your HG 8x30 in for one and get money back!In allbinos review that you linked it is about comparation between MHG 8x30 vs old Monarch7 8x30, not the new M7 8x30! So I compare MHG 8x30 with same allbinos old Monarch7 8x30. You dont compare same binoculars like me and allbinos. You have the new M7 8x30.
Allbinos edge performance conclusion it is misinterpreted because Allbinos does not score the difference in resolution between the center and the edges, but only the subjective percentage of blur, which doesn't really say anything about the actual Resolution at the edges of binoculars!