I dunno, but I'm pretty satisfied with the sensitivity of my XL. My father's iPhone 5C has a very good sensitivity, but my XL is good enough. It does have the multitouch problem, which is sad for me since I play a lot of games and most use the multitouch functionality. I don't have any screen protectors on, nor was there an anti-shatter proof film though I think all XL did not have any ASF out of the box. I guess it's because it's an ODM phone, QC is different.
Xperia L: Stock 4.2.2 (.17)