All you manged to show was the correlation between hp level and emissions - that's not "backup" to your statement that hp has no correlation to engine life.
What I said was a lower hp will effectively enhance engine life. You failed to prove otherwise.
Start a new thread and I'll show you plenty of industry evidence. There's nothing magical about "MD trucks" - every engine on earth, steam turbine, lawn mower, ship engine, jet engine, bulldozer, behave the same way. Increase power output, and down goes the life expectancy. It's comical you even try to deny that.