I think you’re misinterpreting that post. I’ve used plenty of trucks & equipment powered by a DT466 and their over the road engines are good. International builds a good engine, and used to build some really good heavy equipment. But the 7.3, for its displacement, was pretty disappointing in that application. They lasted a long time, but they weren’t very powerful despite being good on fuel for its displacement.You might wanna do some reading up on International.
They didn't just happen to put out a dependable engine.