Actually, now that you've piqued our curiosity we dug a bit deeper and discovered you are almost right. In fact, there was one review on 8/13/2006 for a 2007 Passion Red which rated it a 10 and which resulted in the overall rating of 10 for 2007 for the survey. Your rating hasn't yet appeared, but will reinforce this "trend" :jester
Other than a few odd individual low ball ratings for 2005 and 2006 models, the results for those years look quite good. In that respect, we suspect it's sort of like this forum - there are a few individuals who have been understandably disappointed with some aspects of their XLRs, but the great (mostly silent) majority are very happy with their vehicles.
Ed and Sandra