but due to the large price tags, i wouldnt expect them to increase quickly
It is very interesting to compare the two. They both appear to be good games with high average ratings but with a depressed rank due to low numbers of sales due to high price.
I expect that CW's number of ratings will creep up slowly but I don't think the expansions are going to affect this much since they are mostly going directly to people who already have the base game and have probably rated it already if they are ever going to.
The new ships for SWA will be in the shops and will probably drive new sales partly because they will have something awesome that will prompt someone to buy the base game and partly because the constant new items will keep the base game front and centre on the shelves where people can see it. The new film, and the huge wave of marketing that will no doubt accompany it, won't hurt either.
This is not a bad thing, at the end of the day the rankings here don't matter that much, not even to those of us who use BGG.
I do find myself wondering what CW sales would be like if they had released the base game with two factions for $100 and then each additional faction as an expansion in a nice display box with the miniatures visible in the same way that the FFG SW games do it. Somehow I doubt it would have the same appeal as Star Wars even then.
I also notice that SWA is 47th on the Wargame list and that is only going to increase as well. Already far higher than games I'm sure some of the wargamers would consider vastly superior. Just more evidence that the rankings are what they are and it is not useful to try and use them as the ultimate arbiter of some objective level of quality.