That's what I'm here for, to prove that the impossible is possible and find a way to get Aruba and Michel to agree about something.It's may seem to surreal to you right now, but you'll thank me later.
I would say that my work here is done, but just to demonstrate that my hard headedness is at least equal to y'all, I will continue.
You are right, I did overstate when I said one couldn't win with challenges alone. If one manages to get to the latter stages of either BB or Survivor, and goes on a challenge run as Mike did on Survivor (he also had an immunity that he played the time he didn't win a challenge) one can get to the end. This is rare, but sometimes a coin will land on it's edge. This is just an opinion, but I believe that had Mike been evicted twice, that he would have probably given thought to not continuing to use revenge as a voting strategy. Just as with Victor that probably would have lost him the game.
Even Mike had to have some sort of coherent strategy to get to stage where a challenge run would do him some good. Because his challenge skills, Victor got close but he didn't go on a run at the end. That coupled with his obtuse inability to recognize the need to use a better strategy cost him any chance at a win. The most inept player in BB history (OK, possibly tied with Josea at zero).
Victor won a lot of challenges, but he didn't go on a run at the end. Therefore he needed at least some strategy that didn't consist 100% of revenge targeting. He didn't win crucial challenges THREE times. So it cannot be reasonably argued that not changing strategies wasn't crucial. Or obvious. He managed to survive reentry twice, so it just isn't true that he was targeted more than anyone else because of his reentry.
Now, to gear up for Survivor.