Archers vs outsiders split from unfairly powerful monsters

[Jormengand]

J's initial statement was a blank statement for all 3.5 Fighters. So far it's been reduced to the little corner of Core only, no UMD, and even there the Pit Fiend needs favorable circumstances to be a challenge.

You'll notice that the "Initial statement" that was quoted was after I had already established standard optimisation and core, because most groups don't have access to every source ever and the system mastery that comes with being a forumite for ages. The majority of 20th-level fighters that have ever actually been played would lose to a pit fiend, whether the stock MM one or any other one.