Yeah. But you didn't consider the drawings:
1) If the drawings are hand-drawn:
- not everyone has a scanner (actually, almost no one does)
- you can create a pencil drawing in Photoshop, then reduce the quality, and it will be hard to prove that it wasn't scanned
- there are many drawings in the internet that are hand-drawn, and then it will be hard to prove that it was drawn by the person themselves
2) If the drawings are created in Photoshop:
This will not be a drawing contest at all, but a competition of who has a better version of Photoshop and who knows more tricks that this program can perfectly perform.
Again, drawing with a mouse is problematic, and a graphics tablet is a rare thing and breaks quickly (verified by personal experience).
Therefore...
Although, maybe I'm wrong.:rolleyes: