Depends which ones of Rochambeau's. The vast majority of them taken together are worth less than each and every Professor post, of course. There are some outliers. I don't know if any of them outweigh the least valuable Professor post, but a few probably come close.
That's why I'm asking for the average. If you consider The Professor's history to be superior to Rochambeau's cumulative history, that means he averages over 300 times the quality per post.
And the only Rochambeau posts I can see being of anywhere near the value of a Professor post is his not so bad contributions to the Hot Girls Thread.