I agree, they are different situations.
But, in some ways I think Stith was the worse of the two.
Nuri came in, played half a season and didn't like his situation here. Didn't like the coaching staff, and didn't like how he was being featured in the offense. He decided to transfer after first semester. I actually don't really have a problem with that. People do that in every sport, nobody blames a qb who transfer after his freshman year because he can play more somewhere else. Or, because he doesn't like the offense they run.
Nuri's situation was complicated by the fact that we only had six guys though. When you factor that in, I do think it looks like he let his teammates down a little bit.
But still, he has to make the decision thats right for him. He didn't drag things out. He just moved on.
Stith was a junior. This was his third year of college basketball, and second with Lavin as a head coach. Coach had already advised him after 2010 that he might want to look for a fresh start somewhere else, and coach would support him if he did that. Stith decided to come back. And from all accounts worked hard and was a good influence on the new guys. Even if he got frustrated because he wasn't playing as much as he'd like, which would be understandable, he still left the team in the middle of spring semester. He had a better idea of what he was getting into, was told he'd probably have a limited role, and left in the middle of a semester.
Unless there was a personal or family issue, that seems to me like he let his teammates down more. I would bet if you asked Dom and D'angelo, they can probably understand a guy transferring after first semester. They might not like it, they might not even like Nuri. But guys transfer if the situation isn't right for them. People are finicky. To me you're more of a quitter when you leave in the middle of Big East play when the team is struggling and there's only 6 guys on scholarship.
Different perspective, I know. But that's how I see it.