Yuna (FFX) vs. Malik Benedict (WA3): I'll analyze this a little for CSH below. Doesn't need much >_>
Ramza Beoulve (FFT) vs. Rikku (FFX): So what if I never finished FFT. I feel totally comfortable voting on any character of Squire class. I also give Rikku all common steals with Use, so she's a pretty good Middle.
Algus Sadalfas (FFT) vs. Fu So Ya (FF4)... I think I got to Fu So Ya in FF4 before I had to reformat my HD? Anyways, he's pretty much just another FF4 mage against a scrub.
*Cracks knuckles*
Alright, this'll be quick. Or not. I like to ramble... so yah.
Yuna is listed, for initiative speed, as being at 119% average speed. This is... pretty irrefutable as long as you hold FFX cast to their sections of the sphere grid, and you're on the fringe here if you hold a view that gives them different speed. Suffice to say, Yuna is fast. Malik is also pretty good on speed, if I recall. I tend to give him more speed respect than most, I think. Still, at his absolute best, he's easily slower than Virginia and the person with the Wind Medium (unless it's Clive maybe?). He'd be faster than the other two. This... really can't put him much above 110%. Again, this depends on your views of both Mediums and levels in regards to the bosses in WA3.
Now, assuming Malik goes first: he still loses. His damage is worthless; I don't care how low your level was when you fought him, you have to be trying to do a LLG for him to do OHKO damage to anything. Now, he's got status effects - three useful ones to be precise.
Confuse is his best, forcing the opponent to flail about with random stuff. Mostly random physicals that whiff against him. The thing is, confuse is... maybe the easiest status effect to block in FFX, never mind Yuna getting some unique armor that blocks it to boot, so that's a no go.
Disease is for silence immune healers. Pointless if Yuna summons, since she'll have massive meatshielding and will never have to take a hit.
Misery is silence. Plain and simple silence, just like in FFX. And, just like FFX, silence does absolutely nothing to prevent Yuna from summoning.
So, Yuna blocks Confuse, and doesn't mind the other status effects. She summons... something. All her Aeons are immune to non Aeon-specific status effects, and all of them have either magic, ITE or both. And now frail little Malik has to use his paltry damage to slug past a swarm of beefy tanky Aeons. Valefor alone probably splatters him with ease.
The only way Malik can win is either for you to not allow Aeons at all, or for you to see him as faster, and to not allow Yuna to block Confuse, which she blocks in more than one perfectly legal way. More power to you if you see it that way, since I'd love to see Yuna get slapped around by Malik in the first round, but this is how the match works under my views. We'll probably have to wait for Lady to see Yuna splattered.
Your other controversial votes I'll just skim over: Zelos doesn't get many people allowing his boss form. However, there isn't really much wrong with it. It has a very outside shot at L1, and splatters L2.
Ramirez vs. Lady... you're alone on. First, most people don't allow the fused with Zelos form. Even if you do, Silver Binds (edit) shouldn't match Lady on damage if you let her have Malice Unbral's turns. She's faster; even at low levels, Ramirez is only a bit above average, while Lady is really quite speedy. Ramirez' healing in human form is Loltastically bad, it doesn't really do anything even in game unless you fail at SoA. Plus, Silver Nightmare can't make characters target themselves. Trust me, people have tried, so the only way to justify voting Ramirez here is to vote plot power.
Again, more power to you though if you can justify the vote, I love seeing SoA bosses win. Galcian and Vigoro for Heavy champs! And all that.