The TouchWiz environment has become a target of criticism for devices from Samsung, as this environment significantly burdens the hardware of its phones and tablets. To see the difference, YouTuber Tom Rich posted a comparison of Samsung's software fluency Galaxy S5 and Motorola Moto E, the new low-cost phone from Motorola. Well, even if the cheap Motorola has much weaker hardware than Samsung Galaxy S5, it outperforms the Samsung standard edition in the fluency test Galaxy S5 with TouchWiz environment in practically everything.
So it's quite understandable that Samsung will want to defend the smoothness of its phone and therefore release a special Google Play edition of the phone that will offer a clean version of the system Android. In the end, the Motorola Moto E also offers this, and the "purity" of the system plays a significant role in why the $130 Motorola won. It is also necessary to take into account the fact that Samsung Galaxy The S5 offers a much larger display with a higher resolution, which is also reflected in the processor load.
