Panasonic LZ20 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, FujiFilm XP10 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the LZ20 and XP10 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic LZ20 and FujiFilm XP10 Cameras
Panasonic LZ20 and FujiFilm XP10 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Panasonic LZ20
or the
FujiFilm XP10 ,
including hyperfocal distance.