I agree with you. Gambit was also very close to missing out on Masters Berlin at the hands of Team Liquid. So, If Liquid had won, it doesn't mean that they would have won Berlin.

LCQ players are busy prepping.
That's why Kelogz wasn't playing for Team France, or Mixwell for Team Spain (and many others...)
Also, it's an event for charity, so they are probably trying not to make this competitive by only including pros.