No.
Both tourneys have nothing to do with eachother. That's stupid to delay Nations Cup because of some 1v1 tourney, while we even don't know when Quickz's tourney will end.
I'm sure that people would lose interest in playing in Nations Cup if you postpone it. Postponing the tourney would make it also impossible for some countries (like Israel) to even play in it.
If you delay this tournament once again, I'll leave it.