>>2661757Don't worry, anon.
It's the same sensor but the HX300 does have a way more complex lens layout than the Xperia (lenses made out of plastic)
Here's a quick comparison:
HX300:
-20mp
-1/2'3" inch sensor
-lenses made out of glass
-rather complex layout
-powerful Bionz processor
Xperia:
-20mp
-1/2'3" inch sensor
-lenses made out of plastic
-less powerful image processing unit
-way more aggressive in reducing (color) noise
-more noise in general due to worse processing and the phone getting kinda hot