I don't think OP is being overly negative in relation to the tone of the rest of the comments here. Nobody else up until this comment had mentioned anything about the actual important performance characteristics that the paper's authors' are claiming, and this does put it into perspective with the current state of the art. And OP does even end on an optimistic note anyway. No need to resort to personal attacks.

Edit: I appreciate you toning down the more combative part of your comment.