Yes but that's at Real Madrid, at Manchester United will he get the same goals tally? probably not.
When you look at the Squad Real Madrid have even without Ronaldo they are still the #2 team in the world, United aren't even top 10 currently.
The question is will Ronaldo carve out all these opportunities at Utd for himself? win games single handedly? probably not, does Valencia have the quality to cross the ball anymore to him? no he doesn't.
Young is good but even then will he have the quality of some of the players Real Madrid have, like Kroos who is exceptionally gifted as a passer of the ball.
I know Ronaldo is the second best player of this generation without a doubt and he comes with bags full of goals but to pay that much for a 30 year old, who has a few good seasons left isn't what we need.
We're essentially replacing van Persie with another 30 year old who is only going to regress, Real Madrid have gotten his best years and then will cash in.
I think Depay is a great move personally, and I think we need a conventional #9 do we really want to build a team around a player who will have 2-3 seasons and then will be gone?
For me personally as a fan, I want the target to be European Champions, build a squad that will dominate for the next 5-6 years, not 2 years.