The Yankees have been spending big every off-season for the better part of a decade now and have won jack s***. The Red Sox are the only team to have won twice. Why do you continue to speak as if the opposite is true?
They added CC who won't give them anything significantly better than what Mussina gave them last year. They added AJ who can't stay healthy and has averaged slightly below a 4.00 ERA in the American League. They added Swisher who batted .219 last year.
And they've lost two core hitters from what was already a pretty meh lineup last year, production they haven't replaced at all and unless something unforeseen happens, production they won't replace.