That's a fair assumption, Carter. I'll also say that with my saying the radiator can last, I'm basing that on the rest of the system being okay and or the owner not trying to drive an overheated car any distance. That would certainly put pressure on things that would put them over the edge.
Finally, I'll say that I think many radiators get replaced just so a shop has covered all the bases...and make a little more money.
Sorry for the threadjacking going on in your thread...but at least you're getting views and suggestions too!