Pentax Q Suffers Much from Image Details Loss from ISO 200 and Up!

This test is self-explanatory, the pictures indeed speak themselves:-

http://www.gizmodo.jp/2011/09/pentax_q_1.html

ISO 125
ISO 200
ISO 400
ISO 1600

Umm.., the noise is not particularly obvious, but the image details suffer! >:-[

Do note that the above shows a real-world application of using higher ISO speeds for shooting, i.e., at/for lower light environments.

It seems that such a small sensor is really helpless and actually, hopeless! :-(