Look man, all im saying is that I have not seen a single comment saying summoner is less mobile than red mage before today in this thread. Im not sure what content level you do but red mages mobility is a hilariously rigid right now. P7S' Purgation just as one example is a mess for the job even if you decide to drift acceleration and hold it for the mechanic. There are periods where you can go upwards of a full minute on summoner without ever having to sit and cast anything, and during savage fights that are normally 8-10 minutes in length is a massive boost to the job and how easy it is to do your rotation while resolving mechanics. You do not have that flexibility with red mage period. Sure your dualcast is always free but you *have* to cast Jolt, Verfire, Verstone first no matter what. you only get so many accelerations and swiftcasts per fight.
If you are a casual player then no shame brother, but higher difficulty levels that the game is balanced around is what we are discussing.