No experience with the Mark 5, but I did a resolution / clarity test a few weeks ago with a new Cronus BTR, Bushnell XRS2, Vortex Razor Gen2.
Results played out in that order; Razor was / is pretty disappointing - clarity wise.
Test was on 2 different eye charts at 330 yards. My buddy could read the 4th lines with the Cronus BTR, XRS2 was just slightly behind it. Those 2 scopes were set to 27x so magnification would be equal between all 3 scopes.
Hope this helps.