Hi @therealwolf, @tomswan calculation is correct.
While you mentioned above that factor has been updated to 2.75 to 3.0. But I observed that the basic factor is 2.25 right now. As per the logic mentioned above, that won't be profitable (may also go in loss for the vote buyer) depending on the Steem and SBD value.
Please correct me if I am wrong.

PS: Hats-off to both of you for an amazing mathematical discussion above. Cheers!