Ramza was a heretic, I don't think he could have said anything positive about him without destabilizing his rule. Even though upper echelons of the church had been decimated, religion is still a powerful force in Ivalice after the events of FFT. Maybe the reason he let Olan live was so that he would write the Durai Report and have Ramza's name eventually cleared? (Obviously pure speculation).

If I recall Delita was under orders from the church to kill Orlandu. I don't know if we can count him sparing Orlandu as a selfless act, as he may have decided Ramza was much stronger with T.G.Cid along for the ride. And having Ramza succeed in defeating the Lucavi is obviously beneficial to his plans. I like to think he also respected Orlandu, but I don't think it is a point that can be argued.

It is possible though that my interpretation of arrogance was merely the cool head of someone just trying to get the job done and so perhaps my comments are unfair.
I always saw the latter, but that is likely me identifying with the character. Whenever I have to make difficult decisions I do so with a cool head and unemotional, causing many to think I am nonsensitive and uncaring. It is completely reasonable to see it the other way though.

With SNES/PSX era games there are so many little blanks to be filled in a lot of the time the impressions we get are more reflections of ourselves than the actual characters.

To my memory, he portrays very little compassion for those he murders.
Meh, most of them had it coming

EDIT: I am guessing by the fact I have every second post in this thread you can tell Delita is a character I care a lot about