Although the Samsung tablet has pixel size 1280 x 800 px it don’t use hdpi or even xhdpi image for the splashscreens. I put the splashscreen with 1280 x 800 px in the mdi directories of res. Now the tablet displays a perfect sharp splashscreen.
In Ionic blog you can find an article about generate all splashscreen and all icons for ios and android with the Ionic Cli From one big master splasscreen and one master icon. Maybe this tool now generate all proper images. Even for your device.