Dyrus screwed up by pushing so far in the first game, but he came back and did really well in team fights. Reginald screwed up and decided to dive inbetween the inner and outer turret and lost the game. Second game, tsm decided to dive head first into a terrible fight in the enemy jungle and lost their advantage for it. Dyrus didn't play great. Neither did chaox. Reginald made dumb decisions, and i still think xpecial is a mediocre blitzcrank. Trying to blame only dyrus is dumb.
Also, if you think dyrus single handedely made the decision to play darius you're dumb.
They all played as aggressively as they could the second game, lost because of a bad decision. They came closer then anyone except IG to beating azubu frost. I think they'll stand a decent chance against them in later tournaments because they are getting paid to play league in season 3 from riot so they can no life league more and scrim.