No surprise since Edmunds makes money off of everyone except Tesla (no advertising, no dealers, no comparison shopping that converts to lead gen).
"How does Edmunds make money?
Edmunds sells advertising to marketers who have contextually relevant messages for site visitors. Also, car-shoppers who visit Edmunds have the opportunity to request price quotes from dealers and providers of insurance, financing and extended warranties. Edmunds is paid by the automakers, dealers and other service providers for the lead referrals."
http://www.edmunds.com/about/faqs.html
Or, how about Edmunds observes car resell values and is predicting whatever Tesla puts in cars today, will not maintain it's resell value (relative to other vehicles in it's class) tomorrow since this market aspect is going to move rapidly before it "gets it right".
The resell value may be less than a comparable "normal" car, and there's the risk that some government regulation makes all the technology in a Tesla today obsolete or illegal to use in the future.
(and I believe Tesla quietly killed their promise to artificially inflate resell values by footing the bill themselves a while back)
Some people naturally won't care about resell value - of course, others will.
My anecdote: I discovered Edmunds because of their review of first Tesla sedan. It was for me, a technically inclined but nevertheless technically naive reader, the best car review I've ever read.
"How does Edmunds make money? Edmunds sells advertising to marketers who have contextually relevant messages for site visitors. Also, car-shoppers who visit Edmunds have the opportunity to request price quotes from dealers and providers of insurance, financing and extended warranties. Edmunds is paid by the automakers, dealers and other service providers for the lead referrals." http://www.edmunds.com/about/faqs.html