once AGAIN you're mixing the words speed and agility.
Speed
–noun
1. rapidity in moving, going, traveling, proceeding, or performing;
Agility
–noun
1. the power of moving quickly and easily; nimbleness
one has to deal with the movement while on a surface in which you are in motion, the other is the reaction against any sort of counter action on command. A move is a move. An attack is an attack. Regardless of what velocity it is coming at, Link's reaction of reflex and agility can be just as quick as Ryu.
i.e. the attacks coming Link's way are slow, ergo, he only needs to react accordingly. If they were fast, he'd react other wise.
but you posted a TP Link. When this conversation is strictly about a Link to the Past Link. I'm sure though everyone would be more then happy and fine if you want to count "Link" as one soul entity of his game titles, thus having yourself go up against a very over powered game character.
you yourself should be restricting Ryu to a specific game.