Between your attempt and the fact that you are the only person who replied from over 2000 views of this thread, I think it is safe to assume it needs to be done manually.
I'm assuming that SBR has html tables turned on just for the admins, since I've seen them post tables before. Vbulletin has a TABLE feature that must be turned on in the admin side for the users to use it.
Since there seemed to be alot of interest in this thread, I thought I would let you know that a moderator has informed me that the only way he knows of to do this, is to format a table manually after pasting it.