Rondo, even playoff Rondo, wasn't nearly as good as his reputation would have anyone believe.
I mean this is his finals: 8.7 p, 5.2 r, 5.5 a, 1 s with a TS% of 49.5%. His ORTG was 110, his DRTG was 111.
This is what you think the Lakers can't afford to lose. Really? And remember, that was a better Rondo than he was during the season. He had as many finals games under 5 points as he had over 5 points. Frankly he had 2 good games out of the 6, which is pretty much how he was all season long (including the playoffs). He would show up every once in awhile and remind everyone he was an all star, but then the guy that bounced around the league for years leaving multiple places on bad notes would show up again for a couple of games, before he would turn back the clock some.
Rondo just isn't any good any more. Shroder is a tremendous upgrade. It isn't close.