OAP,
Sincere apologies for not getting the sense of your post right. I'll try to do better in future.
MSOCS made some good points on this issue, which is (unavoidably) complex. How 'bad' or how 'good' the design compromises are depend on many factors including sortie profiles, fuel tank layouts, and not least environmental conditions. The key thing to remember, in my view at least, is MSOCS' point that thermal management is even more difficult on low observable aircraft.
Best Regards as ever to all those posting
Engines