There's quite a few there.....all due to Sterns' 2 model policy of late (except TAF Gold). Some games I think its important because they are that different (i.e. ACDC Pro vs PremLE), but others where it is mostly cosmetic probably shouldn't have 2 separate ratings (e.g. ST vs STLE, or LOTR vs LOTRve).
But I guess art and toys are part of the rating system, so that means the models should be separate.
If you are using it as a buying guide it's also helpful to know that more people rate a particular Premium/LE model over the Pro version of the same game. This would be helpful with AC/DC for example where the Pro is ranked 40 and the PremLE is ranked 9. On the flipside, with Metallica it would tell you they are very similar, with the Pro ranked 16 and the PremLE ranked 15.
I also rarely look at it any more. Apart from the rankings, it is a good resource and would be great if they included rules/strategy.