The Samsung Galaxy Tab 3 Lite is Lite :-). Lite means a simpler version of something. The Galaxy Tab 3 Lite is therefore a simpler (meaning some features removed) version of the Galaxy Tab 3 7.0.
The Lite is 7.0 inches and like the Huawei MediaPad Youth 7, it has a resolution of 600 x 1024 pixels, with a pixel density of 170 ppi. This is about 250 less ppi compared to the iPad Mini.