Amazing comebacks

:D Some are, some aren't.  For instance, Hao Shuai's loss to Michael Maze in the 2005 worlds could perhaps be described as a choke.  On the other hand, Samsonov's comeback in the 5th game of the 2009 world cup was mentioned as an amazing comeback, and I think it fits that description.  If you watch that game, you will see that Samsonov had to play many very good points successively, including two or three absolutely incredible ones, to win that game.

Wang Jianjun's loss to Ma Lin involved a lot of choking, but also a huge stroke of luck for ML, as one of his balls hit the edge of the table while he was LOBBING.  So, even with all of WJJ's choking, he still would have won the match if it weren't for Ma Lin's crazy luck.  Maybe that's why comebacks from 7 or 8 match points down are so rare - even if you are choking like crazy, you can usually squeeze out at least one point in that stretch.