Take a look at this picture.
For movies, Apple gives us the same customer reviews we get for apps on the App Store. But before those, and much more prominently, we get the Rotten Tomatoes score and blurbs from several professional reviewers.
Do this for apps, and the problem would be solved entirely. No need for us devs to respond to customer reviews that are bogus. The pro reviewers are going to be fair and more prominent.
Meanwhile, the customers can still post their views and be heard. Just not as loudly as professional critics who make a living writing about apps.
So someone needs to create a Rotten Tomatoes for App Store reviews. Pull in reviews from Macworld, Macstories, iMore, the Loop, etc. Average them. Then Apple can show blurbs with links to detailed reviews, just like they do with Rotten Tomatoes for movies.