Paul, The 87 CR was a clear winner in 1987. I don't think ANY magazine anywhere in the world didn't give it the top gong.
In 1988, they improved the bike, but messed up the suspension. The magazines were polite about it, some overly so (due to advertising budgets...). Basically, this was the start of Honda's soft-springs, stiff dampening era that lasted into the mid-90s.
It can be fixed, and most modern-day VMXers will do so. But stock-for-stock, the 87 model's suspension was so much better that it more than outweighed the other improvements to the 88 model.
In 89, the new model had all the same faults as the 88, but had the fundamentally flawed first-gen USDs as well. Again, they can be hugely improved - but even once fixed, the 88 RWUs are better forks than the 89 USDs (maybe the very best guys will appreciate the extra stiffness and put up with the extra stiction/bind, but the other 98% of us will appreciate the much smoother action of the RWUs. Doubly so if they forks are set up perfectly).
As a general rule, you'll see that the magazines are merely polite about all of the 40/41mm USD forks. Actual praise only comes when the manufacturers went to 43mm forks around 1992. And the USDs only clearly surpassed the action of the 88 RWUs when they went to 45/46mm forks in the mid 90s....
Plus what Smed said about MXA.
The results for 1980, 81, 82, 84, 86, and 87 won't be disputed be many, but the other years will have a lot of people happy to argue the point.