Because the stated location in the episode titles are the same, I am considering that leg 9 may be the last NEL, or a no-length pitstop leg; and that might be consistent with hiking up the level of difficulty for the two India legs,
I'm going to stay out of the grapevine source discussion, but I will point out that frewuently, the best performing team in average placement has more often lost on the final leg than won. (Take a look at the first post in the ranking the teams thread.)
Personaly, notwithstanding their good deed in an early leg for Mark and Bopper, I would not be happy with an Art-JJ win, their attitude as reflected in the editing of recent legs has off-putted me. At this point I'd be quite content with either Rachel team winning (and probably Dave-Rachel, depending on how Rachel Reilly behaves in these last four legs.)