its a copy of the same picture. the splash screen that is shown is in /platforms/android/res/drawable-land-xxxhdpi/
i copied this picture inside my www folder and i show it when the app finished loading.
i'm 100% sure its not about the picture. I tested a lot.
i uploaded both screenshots from tablet. u can see the difference if u open both each in an own tab and u change between this tabs. there is no difference in size or anything. just one time a little bit blurred, and one time its completely sharp.