I completely agree, they should just take that matchup and take advantage of it until the Cavs are forced to switch, however....
We have a problem. The Big 3 cannot seem to function unless the offense is relying upon them. That means instead of Rondo attacking Parker, he has to hang out on the perimeter, waiting for Ray to come off screens, posting KG, or getting the ball to Paul for an iso or pick and roll. Those obviously aren't terrible options, but I still think Rondo taking on Parker is the BEST option and the one we should use consistently, because Parker is sooo much slower than Rondo. But I don't think that will happen.
In conclusion, we need to play better defense.... what? Yeah, the biggest problem was defense the other night, not offense, but I still agree that we need to take advantage of that Parker-Rondo matchup, because despite what anyone says, that is a HUGE Celtics advantage.