Why aren't some items reviewed?

I remember Vlad saying in the Mobile Show that the Xperia T was not innovative enough so he didn't review it. Can some Verge reviewers put something like this (their justification) for not reviewing/reviewing a certain item here? I'm very interested to see them. I'm not requesting a review of something, just wanted to see why some items (eg. Samsung Ativ Book 9+, Sony Xperia Z Ultra) aren't reviewed. Thanks!