Speakers, have evolved quite a bit over the past 30 years and the bar has been raised.
The best parallel i can draw is cars. ABS, power steering, power windows, power locks, etc can all be found in today's budget cars. In the 70's they were nowhere to be found, and in the 80's some of them were found, but only in luxury cars. Today, they're commonplace.
Speakers are similar. There were no "subwoofers" back then. Most speakers were made of paper. There was no video shielding, etc. Computers alone have made speakers much better as modeling can be done before building anything.
The scores/reviews you saw back then were relative to the technology available. Something that scores a 92 today will not be considered a 92 in 30 years as standards have shifted.
At the end of the day though, what matters is how they sound to you. If you like them, whether a magazine from 30 years ago or from yesterday scores them good shouldn't really matter.