I used to be a fairly serious wine drinker. The Wine Spectator had a one hundred point scale for any bottle of wine it reviewed. While it wasn't perfect, the numbers said some things pretty clearly to me a wine drinker.
A bottle of wine scoring in the eighties was a solid performer, one scoring in the nineties was something special, and a bottle that scored 98, 99, or the rare 100 was an exceptional bottle of wine that would knock your socks off.
If you start to include price in there, a bottle that scored 85 and cost $400 was a terrible value, while one that scored 85 and cost $12 was an exceptional value.
So, I disagree wholeheartedly that speakers cannot be scored. Yes, there is no perfect review methodology, and there are many variables. But as a consumer, I want the expert to give me his best judgement on a speaker's performance. Then tell me what it cost, and I as an informed consumer can make my personal value determination.