I’m not sure if the PVP balance was perfect intentionally, or if it just ended up that way. Even minor bugs like Weapon Swap Glitch added to the balance of it (it was one of the only ways to get out of certain stuns if you had high faster hit recovery). Then here comes New Blizz, they start “rebalancing” classes for PVM (which also had no real problems, just crying from people who didn’t know how to make their own builds properly), then they started fixing “bugs” that didn’t hurt anyone and added balance value to PVP, like I mentioned, and the whole thing went to crap.
But for 20+ years D2 PVP was the most fun thing in the game, and honestly the true end game. It was fast paced, balanced, and largely based on actual user skill, with a slight competitive edge to those with the best gear. As it should be. No matter what class or build you played, if built and played properly, had an equal chance against everyone else.