Those 7.3L engines are significantly more powerful than the 6.5L diesel is. I love those old 6.5Ls though, they have such a unique sound and truly did perform fairly well considering their power ratings and the vehicles they were installed into. Definitely can't hold a candle to the modern Duramax engines, but as compared to the carburated rigs they used to compete with they were pretty solid engines with an unfounded poor reputation.
Agree 100% with everything you said , I used to buy into the anti 6.2/6.5 until I actually owned one and at that point I realized the people talking the most shit never had one , or it was poorly maintained.