Westbrook can be the best player on a team but more importantly, he can take a game over with his offense. Rondo can not. Rondo NEEDS to have at least 1-2 good players alongside with him who can score and if he doesn't, goodnight Irene.
So, you honestly believe that a team led by Russell Westbrook without "at least 1-2 good players alongside him who can score" would be a legitimate title contender?
I mean, really, give me a core of Rondo, Durant, and Ibaka, and I feel fairly confident that team would be a contender.
Hmmm...that's not what I said
You had basically asked, what does Westbrook have that Rondo doesn't
My answer is Rondo needs 2-3 other scorers to hide his offensive flaws whereas Westbrook can take a game over with his offense.
So individually, I think Westbrook is a better player than Rondo.
Do I think a team with Westbrook as it's only scorer can be a championship team?
No, not at all.
However, I think with a couple decent picks up this summer and such a trade taking place, yes I do think the Celts would be a better team with Westbrook than with Rondo.
I guess to make a long story short, what I am trying to say is that Westbrook along with player X and player Y is a better team than one with Rondo along with player X and player Y.