Ba and Torres combined well in the latter stages of Sunday’s FA Cup semi-final defeat.
But Benitez said: "We have two strikers, both doing well. At the same time, we have three players who play behind the strikers who are quite offensive, score goals and have an impact.
"If you change the shape, you have to change these players who can be very influential. Mata, who has done well in the middle, would have to go wide. Can you be sure it would be better?"
Blues fans, do you accept Rafa's explanation? Or are Chelsea better with Nando and Ba up top? Give us your shout below...