Buy your dad a beer, Frank! I know had I asked my dad to do the same thing he would have obliged but would have sported a nastier facial expression
It's great to see a test like this, even if the lighting isn't as controlled as we might have liked. After scrolling up and down I would say the differences are minimal, and are not differences in quality, but in taste or preference. Reading the comments it's clear that some people lean towards one while others prefer the other.
Personally, I prefer the rendition of the 77 Ltd, as well as its bokeh. This is probably a good thing seeing as I just bought one
I haven't bothered looking at the larger sizes cos I doubt either of them is not sharp enough, so no reason to worry about that.
Bottom line that I get from all this: If money is not an issue and you don't need the extra 2/3 stop of the 85* for low-light shooting, then buy the one whose rendition matches your tastes better. Either one is a winner.
Again, thanks Frank!