With high Nr and one Nf/N2 high....what kind of failure(s) are the options?
If the N-1/Ng is within the governing range....or outside the governing range....how does that "confirm" what the Nf/N2 indications are?
Which gives you the better indication of the cause of the problem?
When we discuss general rules we have to remember there are differences between aircraft types and models of those types to take into consideration.