I come from jQuery background, found Sencha Touch to be exciting and learnt Sencha / ExtJS to enter the contest. My app was surely not the greatest. But I felt it was very useful! My reaction to the Top 10 list was that Sencha has probably given more weight to design and aesthetics than innovation or functionality.
I certainly found some of the top 10 apps to be quite basic. I loved some of the apps that were being discussed in these forums more than the top 10.
But I think this is alright. Sencha's purpose organizing the contest is different. They want to promote Sencha. And it gets good press if the winning apps look good and are easy to understand by common users.
I got a lot to learn and I think that's what I am taking for myself from this contest.
Best to all...