I will give my honest opinion here..I dont think only 36 rafale will give that much edge to India.
Reasons pakistan is operating only 3 kinds of fighters..mirage,Jf17 and F16 and they have been flying these jets for too long..so they are a master at flying these jets..well trained...and logistically everything is under control.
Now look at IAF...its a big mess..su30,jaguar, mig 29,mig 21,tejas and now this rafale. It's a complete logistical nightmare. And buying a brand new fighter is one thing...but mastering it is a whole new level and its gonna take at least 3-5 years to master that aircraft. Plus it's a costly bird so iaf will have to be much more careful.
In the end these things will make all the differences