Obviously those people didn't know what they were talking about and Rizwan had an excellent domestic record. He is fulfilling his potential but the power has been an unexpected development.
Nawaz domestic record isn't anywhere as good and he is definitely not good enough to be a #4. Totally fine as a #7 and supposedly, if he is good enough to be #4, than the team having enough depth to play him at 7 makes the team much better.
Sometimes his bat doesn't always fire if he comes in late as per the issue we saw against SA when we narrowly beat them, best thing is give him a promotion and see how he does otherwise possibly even give Shadab that role.