Just to clarify, the issue I am reporting is that when a user searches in the Mac App Store, the default visible result set appears to show iPhone/iPad apps designed for Mac, while actual Mac apps are only shown after selecting the separate “Mac Apps” option.
That's true.
A user searching inside the Mac App Store would reasonably expect Mac apps to be shown by default. If the search view defaults to “iPhone & iPad Apps”, then Mac apps are effectively hidden behind an extra selection step, regardless of their normal search ranking.
I agree. But, honestly, I wouldn't make it a big deal. I do wonder, though, why they need to show the search result for iPhone & iPhone Apps by default when they know iPhone and iPad users don't use the Mac App Store application. In fact, I think this is stupid. It's as stupid as how Tahoe keeps running the progress wheel for 10 seconds or longer when I use NSOpenPanel and NSSavePanel on my Mac mini.