Sony TX5 has a
10.0MP 1/2.4-inch (6.104 x 4.578 mm ) sized BSI-CMOS sensor and features Bionz processor. On the other hand, Fujifilm XP120 has a
16.0MP (1/2. ) sized BSI-CMOS sensor .
Fujifilm XP120's sensor provides 6MP more than Sony TX5's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the TX5 and XP120 sensor size comparison.
As seen above, Sony TX5 has a infx Larger sensor area than Fujifilm XP120. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.