Oh and Prodigy "Although I can beat Ruby/Emerald with about 2 button presses" That's actually impossible, the maximum amount of damage you could do with two button presses is 9999 being that you could only select attack and the target. Emerald has 1,000,000 HP and Ruby has 500,000 HP. So no, I don't think they are defeatable in two button presses somehow.
Want to know how?

This is my strategy, there are probably others and many people might have thought this up but I devised it myself so give me some credit.

Oh and by 2 button presses I meant 2 moves of course.

Make sure you magic is max on all characters. HP max of course. Everyone has final attack mime. Everyone has counter with mine. First person w-summons KOTR. KOTR is of course tied with HP absorb.

This means that the first w-summon does 26 x 9999 damage. That's over 1/4 of the health of emerald. You also get all your HP back. If he hits you - you retaliate with another 26x9999 damage because your counter attack is mime. If he somehow kills a party member - whoops, there goes another 26x9999 damage.

Therefore all you have to do is use w-summon KOTR once and you've defeated either weapon unless you're very unlucky.