So Ganondorf can be stunned by normal arrows and being thrown to the ground? In some videos he has them on, others he doesnt.
The stun is a game mechanic to allow you striking time, that much should be obvious when a moment later he tanks a castle busting.
Optional choice that doesnt effect this battle or any other. As someone pointed out to me the gauntlets are only used in lifting the pillars, shown as his attacks arnt stronger when he has them on.
Oh great, this crap again, this has been disproven over and over again. The gauntlets are not optional, you cannot beat the game without them, period. Unless you cheat. (Non canon!)
Now, then, onto your argument from gameplay mechanics. Link with the silver gauntlets can lift and throw large boulders, with no marking! just random boulders. He still only throws pots and jars a limited distance. When you get the GG, he has the exact same animation for everything he already did, but now he throws massive pillars farther and faster than he throws boulders and pots. HM! Odd. mmm Oh, and the in game description states they give him strength.
Essentially; gameplay mechanics, won't fly.