Biggest Loser Season 12 Week 11

Final week on the ranch for ALL the contestants brought us the fan favorites: makeovers & "put the weight back on" challenge. 
The contestants put all their weigh back on and battled up a steep hill in a race for a 1 pound advantage.  At this point in the game 1 pound is pretty important.  John came in first to win the advantage.  Antone was right on his heels, followed by Sunny, Becky, and then Vinnie.  Each of the 5 contestants got a year supply of soup from Progresso and $5,000!
Then off to the big city for Beverly Hills makeovers.  They all looked awesome in their new clothes with great hair & makeup for the girls.  They also got to have a spa treatment!  Becky was the most awesomely transformed with her short hair-do and new body.  Of course, they each got to see one member of their family with their new makeovers.  They also got to go to a show with their family member. 
Which brings us to the weigh-in, determining the Final Four.  Sunny put up a 1 pound weight loss and the rest of the contestants pulled really good numbers.  I would love to place the blame for her poor week on the time spent at makeovers or on her trainer, Anna, but honestly I think she threw the weigh-in.  I think Bob was on to her.  He was pretty upset about her one pound - more upset than Sunny was.  She tried to act speechless and/or upset, but wasn't doing well with it and Bob seemed to see through her.  Sunny knows she has no shot at winning the title & $250,000, but she may have a shot of winning at home.  In my opinion this was confirmed when Becky (her best friend and roommate from Day 1) voted to send her home, in hopes that she could wint the $100,000 at home prize.  I do see her point and I can totally understand her motives - I just hope it works out for her.
So that leaves John, Becky, Antone, & Vinnie in the Final Four (I got 3 out of 4 - not bad right?!?)  Now they go home for awhile.  Then, EVERYONE comes back for the marathon - a new thing this year.  The winner of the marathon is guaranteed a spot in the finals.  Then they apparently, somehow get down to final 3 and we get to see the live finale.  My only question is - If the marathon winner is an automatic final 3 contestant, are we eliminating TWO players next week?  So we have final 2 & the marathon winner competing in the finale?  If so that adds two more people to the at-home contest, both of which have a great chance of winning.  And, if you believe the previews, which seem to make it pretty obvious, Ramon wins the marathon.  Hmmmm........  Why would the previews be so obvious?