Dan Shaughnessy by the numbers

Why does Boston Globe columnist Dan Shaughnessy keep saying (here and here) that the Celtics were 41-14 before the Kendrick Perkins trade? After all, they were 33-10 without him. No, I didn’t like the Perkins trade, either. But how the Celtics played while Perkins was rehabbing from knee surgery isn’t exactly relevant if the point you’re trying to make is that everything went to hell once he was traded. (Note: Italic section added for clarity.)