Ah, moscow, you never disappoint. I had expected you to say something like this. If FC-20 is so good, why get Mirage. This is probably the third time I have seen you write something like that.
Why does Russia fly more than one type of fighter aircraft? Or for that matter, why does India?
Pakistan has plenty of infrastructure and expertise to support Mirages, and therefore, if this news is true, the induction would happen quickly and the supporting operations will require minimum effort. It could very well be that Pakistan is looking for a quick solution to gain BVR technology. Most likely situation, however, is that the PAF was made an offer on Mirages it just could not refuse, considering we already have everything else necessary to run them.
Ofcourse, if this news is false, then I will feel embarrassed for saying that I had predicted this.