CPI for ARM V-7

Hi All,

I could understand the difference in ARM V-7 processor differences between A/R/M.

But does the clock cycle per instruction value for the various series of processors (A/R/M) remains the same or similar, assuming the data fetch and instruction fetch can be made in a single clock (say from cache) ?

Is there any white paper document discussing on it ?

What is the similarity between ARM V-7 processors  ?