Gmax invented coinjoin, the mixing algorithm Darkcoin broke, bastardized, and rebranded as 'Darksend.'
Actually evan fixed, improved and rebranded as Darksend.
Remember when Darkcoin wanted Gmax to audit its crypto?
i don't even know those people you quoted.
Most thought Kristov Atlas was a better choice as he is the one who cracked Gmax's coinjoin implementation by SharedCoin.
CoinJoin Sudoku. Weaknesses in SharedCoin, and CoinJoin research.
http://www.coinjoinsudoku.com/advisory/He could not crack Darksend and gave it a positive review.
https://dashtalk.org/threads/reply-to-kristovs-paper.2325/