when you say "most competition wins" I assume your including H&HN comps. To me that's not that "amazing". Even if she wins the F3 HOH she will still have LESS combined HOH/POV wins than Dani(7+2) and Janelle(4+9).
She was a huge target. But she was a huge target behind bigger targets. Brendon, Jeff, Dani, and even Jordan(jury votes) were all bigger threats within this game. Yes she survived 5x. But how many of those were as a result of her "game"? 1) She had to be saved by Brendon. 2) She was saved by the threat of a twist the very next week. If JC doesn't tell them anything that week, is Rach still staying on a 6-0 vote? 3) Jeff was the target over her during FF. 4) She saved herself with POV. 5) You could argue her connection w/Porsche "saved" her over Jordo. Flip side you could also argue Pandora's Box saved her ass this week because Jordo SHOULD have been gone at this point and Rachel would have been THE ONE and ONLY target remaining at F4.
Does she rank in top 5? HELL NO! Will, Boogie, Jun, Maggie, Dan, Hayden are all far FAR superior players and will ALWAYS be better Winners. And a lot of people like to take credit away from ED and his win with that seasons twists. Rachel, and Rachel specifically, has benefited from multiple twists this season. Her potential win should be looked at in an equal light.