The App Store saw a huge sales spike on Christmas Day, according to new data from Flurry Analytics. The firm found that iPod touch downloads surpassed those of iPhone users for the first time, as iPod touch downloads jumped nearly 1,000% on December 25 compared to the average of all previous Fridays in December, eclipsing iPhone downloads by 172%. iPod touch download volumes continued to exceed that of the iPhone by 104% on December 26. Overall, App…