I don't see this as being a debate with any clear resolution to it - in spite of the fact that I've been involved in it.
We truly don't know what effect having Beni on 1st with the chance of stealing 2B would have on CC's pitch selection. Maybe he would have hung a curve and a 3-run homer would have resulted. We don't know.
OTOH, Max has a point to when he says that CC was dealing like he always does against the Sox. We just don't know what would have happened.
Generally speaking, and this is just IMO, under the circumstances I'd rather have had sure runners on 1st & 3rd with nobody out than risk having Beni thrown out trying to advance a base on what was going to be a close play, risking 'losing' 1/3 of an inning + a baserunner.
But again, that's just IMO.