Gandalf Vs. The Witch King

[obloquy]

Also, wasn't the comment of Gandalf being greater than the Nine said by Aragorn before the Witch-King's "power boost" as well?

You take for granted your own idea of what Tolkien meant by his letter describing the Witch-King's "added demonic force," which has not been established conclusively. My reading of the letter bears as much legitimacy as yours does, and does not ask us to gloss over holes in logic: for example, If Sauron could literally channel more power into his Nazgul, why not do it when he knew exactly where the Ring was and didn't think anyone knew he was coming for it? Why only soup up the Witch-King? After all, wasn't the War of the Ring an "all or nothing" situation? Sauron wasn't personally at risk in Barad-dur, so why not pump even more vital juice into the Nerd-King?

Nope, I don't buy it, and I've provided sound arguments against it. You can believe what you want (and I know you do, facts be damned), but don't play the card like it's a conceded point.