I don’t really know what you are talking about, terra was the one the suffered the most among the 3, his body got possessed for 10 years and was forced to do evil things that made many worlds fall into darkness, he was forced to attack his friends he lost his master in front of him, and lastly his body was split to become Ansem heartless, Xemnas, Terranort, lingering will, that the poor guy is in all places being split to pieces, one holds his mind and soul which is the lingering will, one holds his body xemnas, his body (terranort) still moving on its own, He was forced to be a heartless slave to Xehanort as the Guardian, what fate can be worse then that honestly? Also terra have always been potentially the strongest among the 3, him and Aqua have always been equal but when terra goes all out and unleash la his full power (his darkness power) he becomes the stronger among the 3 trio, I don’t remember ever seeing terra losing in any one on one matches honestly, he took both xehanort and vanitas on at the same time and overpowered a keyblade master eraqus, and toom down terranort on his own (while aqua had terra’s help from the inside which was 2vs1 to win) so yea I again I don’t understand what you mean maybe it’s your opinion which is fine but everything you said about terra is wrong
P.s terra May have been easy to fool but at least he doesn’t judge anyone by their appearance whenever he see s scary looking villain he doesn’t look angry unless he knows they are evil, lol honestly terra is a wonderful character in my opinion.