The answer really depends on which challenge you are talking about.
In general no, its not about who does what, but that you do it at all. Only the challenges with * are competitive.
Just thought I would mention that you guys can upload the clips anytime.
Just drop a message here if you do so I can make sure I download them ASAP.
No problem, Its always open so you can upload when you like to clear out your reel if you need space.
Also, if I start getting clips early, I can indexing them so there isn't so much work at the end, but I don't mind either way.