I think the biggest competitive Pakistan offers (versus other suppliers) is that we can provide turn-key maintenance, training and doctrinal updates.
Basically, if we treat our JF-17 customers as extensions of the PAF, we can deliver the same stock of simulators, update their training methods (in line with ours), and even call them up to optional exercises in Pakistan (or carry out said exercises in Nigeria, etc).
Not only does the end-user stay up-to-date with a major air force's training and deployment best practices (directly fed from the originating user), but it also gives the PAF the ability to station in foreign soil.
If a day comes that Pakistan engages in more impactful foreign policy endeavours (e.g., securing allies, independent peace-keeping ops in MENA, etc), that would be helpful. I'm thinking way ahead of course.