You are comparing one performance parameter on two entirely different types of
aircraft. It doesn't matter what the SR's speed is at 40,000' -- it doesn't
fly there. How good of imagery coverage can the MiG 25 provide, from 90,000'?
Apples and oranges. A better question would be, how many times did a MiG 25
manage to catch the SR?

v/r
Gordon
====(A+C====
USN SAR

Its always better to lose -an- engine, not -the- engine.