Saurons Weapon of Choice?

[Tuor in Gondolin]

PJ's mace swatting a dozen (or hundreds) at one blow by Sauron was, of course, ridiculous. Sort of the way PJ exaggerates just about everything, for example making wargs superwargs in TTT movie.

The impression you get from LoTR is of essential single combat style
(like in manyHollywood Greek/Roman battle scenes).

Since Sauron was a disciple of Morgoth I'd look to Morgoth's battlle
with Fingolfin after the Dagor Bragollach.

Fingolfin challenged Morgoth to single combat.

...it is said that he took not the challenge willingly; for though his might was greatest of all things in this world, alone of the Valar he knew fear. But he could not now deny the challenge before his captains; for the rocks rang with the shrill music of Fingolfin's horn, and his voice came keen and clear down into the depths of Angband; and Fingolfin called Morgoth craven, and lord of slaves. Therefore Morgoth came...And he issued forth in black armour;and he stood before the King like a tower, iron-crowned, and his vast shield, sable unblazoned, cast a shadow over him
[Fingolfin]...Then Morgoth hurled aloft Grond, the Hammer of the Underground, and swung it down like a bolt of thunder.

So Morgoth was phyiscally imposing, but it was possible for a single elf (granted the greatest remaining in Beleriand) to fight him. Sauron was obviously much less physically daunting, although (being more then an eyeball) more imposing then even a single elf or Numenorean of the Third Age, so it may well have been a two or three on one battle, or as Gilgalad wounded Sauron while being killed another of the Last Alliance skewed Sauron. Then took or cut the Ring off his hand.