I thought DR would upstage XC3 but no, it didn't. I don't feel bad for Xehanort, I don't have any empathy or sympathy for him unlike I did for my boy N. The difference between them is the writing, timing, and the callousness Xehanort always had versus N's once being an upstanding member of society.
Xehanort was always interested in towing the line of dark, even crossing over it, and he never showed his cards. Why? We will never know. Eraqus' friendship with him wasn't the same as his friendship with Eraqus. E seriously valued his buddy-turned-brother, even in their old age he loved his brother. Xehanort did not. Eraqus did move to kill Ven, but NOT Xehanort. Why? Because even after the scars, he STILL loved his brother. Xehanort killed Eraqus like a bitch too, and only when Xehanort himself was on death's door did he finally give in to Eraqus' wishes.
Looking back, we see Xehanort's callousness too when he kills Baldr. He wasnt supposed to kill him, just rid him of darkness. Thats why Eraqus was with shocked expression.