Why is NJ cool and Boston bad?

Over the past week the Boston Celtics have gotten ripped for trading for a 32 year old (opening day 2007 age) shooting guard Ray Allen. New Jersey has been praised for re-signing Vince Carter.

Let me ask you this. Who would you rather have - Jason Kidd, Vince Carter and Richard Jefferson or Ray Allen, Paul Pierce and Al Jefferson?

I would rather have Boston's threesome. So why is New Jersey cool and Boston getting ripped for a bad deal.

Sidenote -- Ray Allen as the third option offensively on a team with a post presence in Jefferson and a good driver in Pierce, who can penetrate and kick. If their is a scenario where an aging shooting guard can survive and thrive this is the one.