Everyone is looking to into this they make the comparison to SRK too much.
If you look at the scenes with Malf.
Clearly you see how she acts as the shield/ the sister to him guiding him.
Terra on the other hand is the confused guy who doesnt know what to do but in the end is inspired my Ven to save his friend with his "darkness" (ie his statement in the cutscene about using his darkness for his friends)
I honestly see no VALID sources to even support half the claims here to be honest.