There are substantial similarities between the two. That it's not a 1 for 1 copy doesn't change the fact that they are substantially similar.
Case in point. The text below has more difference contained within it then the list of 9 specific difference you listed in your post. Taken individually, they prove that I did not copy your post, and that what is below is original.
However, any reasonable person would take a look at the two and find that they are very similar in terms of style, presentation, and intent. That they are copies. Identical, no, but copies nonetheless.
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There aren't any examples of identical artwork from the two sources that I can see. There are links such as http://bit.ly/13IvNcq that show substantially different artwork side by side. Do you really mean to tell me you can't see any difference between those? The only substantial similarity in either of those is the placement of the pins of the map. Notable differences:
The clock:
* The FlatUI one has a drop shadow.
* The length of both hands is different.
* The colors are not at all similar.
* In the Dribbl artwork the hands are all the same size, while the FlatUI one has a 'skinny' minute hand and a skinnier second hand.
The map:
* The landmasses are different.
* The width is different.
* The colors are quite different.
* There are a different number of landmasses.
* The Dribbl art is of a map with three folds, with both ends facing downwards so it forms an 'M' shape, while the FlatUI one has four folds, with one end facing down and the other facing up.
Beyond details inherent in the objects and art style (e.g. clocks are round and have hands), there are more differences than similarities. I would hardly call that 'identical.'