Combat speed is equalized, reaction speed isn’t. Links may or may not land more hits but at least he is capable of reacting to her danmaku.
I will adress this as good as I can
Mereoleona is faster, by rules, the faster character is equalized in speed to his opponent combat speed, Link in this case has 3 types of speed, general speed that is his slower one, combat speed and reaction speed
His combat and reaction speed from what the page says, is equal, there is no difference, other characters just say that reactions are faster, Link says is his combat and reaction speed, Mereoleona would have all her speed dropped to match Link combat speed and because Link has equal reactions to his combat speed, Link does not have a reaction advantage
Nuking the battlefield won’t do anything, Link is intangible. And No her NPI only works against Elemental intangiblity. Links intan is a layer above ghosts.
True and Link also can become invulnerable, but both options cost a lot of Mana and (probably gameplay?) he can´t use items like boomerang or anything if he is invulnerable/ invisible, at the very least, his proyectiles can´t be invisible because he is using a cape , if the proyectiles leaves the cape, then is not affected by it
Mirror shield from Zelda wiki: known for its ability to stop beams, such as those fired by
Laser Eyes, and attacks from enemies such as
Lynels, and it can even reflect
Wizzrobe projectiles
Mereoleona fire can be reflected but the problem is that Mereoleona burns magic, the shield is magical and has 0 resistance to power nullification, this point needs knowledge from someone who knows about Zelda (And I know that Link has resistance to PN, but that is himself, his shield can be stolen for example)
Big question, does Mereoleona has Class G pre-time skip? Because there is no indication of difference in her page(Edit : and Characters like Luffy has keys for their LS even when there is 0 changes, so Mereoleona having class G with reinforcement Magic can perfectly mean that even pre-time skip could have Class G LS), this is important because if she is superior, she just disarms Link
And after closer inspection to Link profile, he has red (and blue, but is not noted) mails, the blue mail make him recieve 50% damage, the red is another 50% on top of the 50%, his profile does not note this in his durability section however
Also, Mereoleona can resist quake power nullification, which consist in transforming you into a slime, if he resist one part, what happens with the other one? She would be a slime but she still would have her powers?