I agree with Eugene, adjones and tsarothpaco - both of the moves were, well, lacking in smoothness was the biggest fault for me. I did not vote either. I know guardian's was from Motion (my general knowledge of cardistry is terrible, I will say), and if you're only at the stage where you can perform other people's flourishes, like I am, well ok that's fair enough - but the smoothness...
Guardian, yours needs more confidence and surety - most moves looked particularly jerky as though you had to recall what to do - as Eugene said, get things down smoothly, and eventually move on to creativity as well, and they do come in time.
diablique, yours seemed not so much a confidence issue, but it was technically messy - whereas Guardian seemed unsure of his moves, yours seemed like you could do them and knew them, just not well, for example squaring the pack against yourself in the right hand early on. As a cut it was a more interesting composition though, but again needs refining.