Well we do know that DW's budget has been cut and, according to some posts over on the DS Forums, this is noticable. Can't say I have noticed it myself though.
However, no. I don't believe that Pierre was talking about anything other than the actual content of the show. I base this only on other, similar, comments I have seen from time to time on various forums; that TW is what DW should be and no-one has ever mentioned
any of those elements.
They are only referring to the fact that they prefer TW of DW because they perceive the latter as not being "scary" enough or being too purely aimed at children which, of course, has never
ever actually been the case.
As for DW not being scary enough. It seems some people
completely disagree.