I experimented a lot with it (8x42) these past few weeks since I also have a Meostar (7x42). My impression is it's not sharpness that's lacking. It's something (forgive the laymen use of definitions...) in its contrast and brightness, combined with that I feel there's a tendency to júst overshoot precise focus. Not that general focus is too fast, it does not "snap into focus", to me. Can't really pinpoint how or why.
I kind of agree with this, while the MHG 8x42 is very nice optically -- bright, clear, mostly neutral color, very large sweet spot, plenty sharp -- there is something a bit "flat" about the view to me. I don't mean "flat" in terms of disortion/curvature, but in terms of "depth" or "pop" visually.
I actually don't think they have great "global contrast" to use a term that Tobias mentions in his reviews. When I look at the night sky with them vs. the Leica UVHD 7x42, the black background is not nearly as black, there's a "milky" look. If I compare them the daytime, the Leica (and my EDG) just has another level of saturation, depth, vibrancy, pop.... not sure the right word, but it's the biggest difference I notice.
In terms of brightness / clarity / resolution the MHG lets me see anything those alphas can see, but the image just is "missing" something that the UVHD and EDG have. I even notice the increased "depth" or "vibrancy" with the Swaro 8x30 CL, so it's not just about the warm look of the UV/EDG with the extended deep red transmission.
That said, of course, the Ultravid HD and EDG retail for >2x what the MHG do, so they should be better. The MHG holds up very well against the ~$1K sub-alpha competitors, in fact the only binoculars I've seen at that price point that have that "extra something" in terms of contrast/depth are the Kowa Genesis and Meostar HD.
None of this is to hate on the MHG, which is a great binocular and maybe THE best "jack of all trades" birding binocular on the market that doesn't cost alpha money.