I disagree, I think that Rupert will win in pretty much any case unless it is against rob, and then only because rob was a much better strategist. This is how I see the votes going if amber is in the F2 with rupert

Lex - Rupert (I don't think that he respects amber's play very much, so unless she is the one directly to out rob, showing supreme strategy, I don't think he'll vote for her.)

Alicia - Rupert (pretty much definitely, she is not really known for her strong thought based decisions, she works from emotion or plain to see fact. Rupert blatantly does the most around camp, and amber is the closest aligned to rob, who is not alicia's favorite person)

Kathy - Rupert (need I say more)

Shii Ann - Amber (she likes rupert, but envies amber's game play ultimately winning her vote)

Tom - Rupert (besides the fact that he's a bigot, which rules out an amber vote, he will be angry rob would toss him over for her, and of course there is his famous quote "this game is for the big boys," which may or may not mean something, but definitely shows his thought process)

Jenna - Rupert or Amber (Her vote will be dependent on how she leaves the game. Jenna is two faced, plain and simple. She tries to be your best friend, but she can hate you two minutes later. Besides all of her unwarrented rupert love is kind of suspicious to me. I mean who repeatedly wants others to give reward to someone besides themself. I realize a loving sweet person would, but those people just don't play this game. It is definitely done with a second purpose, which shows she isn't as attached to rupert as we may think. In addition her statements saying rupert doesn't know how to strategize, show that she may think amber better apt to play the game.)

Rob - uuuuuuuuuuuuuuuuuuuhhhhhhhhhhhhhhhhhhhh! wait I think I got it ....... AMBER. (do I need to explain why?)

so there you go, it really wouldn't matter how jenna voted, it would be a Ruppie win 4 or 5 to 3 or 2. Either way he wins.

Now that I'm done fantasizing about how a good season of survivor would end, I'll get back to work.