I would defently pick the ASUS, it has dedicated graphics and a i5 U-series CPU (U-series is good for battery time). ASUS is generally a better brand than DELL in my opinion atleast.
The DELL has a quad core AMD CPU which is significantly slower than the i5, doesn't seem to have a dedicated GPU either, it does though have 250gb of extra storage and a touchscreen.
I would defently pick the ASUS, the i5 is more powerful, it's dedicated gpu beats the integrated in the AMDs at anytime.