That comparison is based on what features Barnes & Noble has chosen thus far to highlight on the device specs section of the Nook Color sales page, in an effort to present things fairly. (ereadertech.com)
As we just said in the specs section, the 16 GB $ 250 Nook Tablet runs much faster than the Kindle Fire, but those advantages are mostly lost in the 8 GB version. (digitaltrends.com)
Additionally, the specs section claims that the 3,450 mAh battery (Pixel XL) will enable 26 hours of talk time and 456 hours of standby. (android.gadgethacks.com)