I must admit that I was skeptical about S and V in this day and age, but it did save Federer today. He was being dominated from the baseline, which is pretty hard to take for those of us who remember him at his height.
In 2012 he beat Novak by playing crafty grass court tennis, even though he was far from a world beater. I think he probably gets by Raonic with guile and a bit of luck, but I don't think craft will save him from Dimitrov or Novak anymore.
Also while he used to deal with power players better than anyone on tour, those days are over and it's possible Raonic powers him off the court like Berdy did a few years ago. I do think S and V helps him here though.