The XE303C12 has a Samsung Exynos processor family which is better than most portable PCs that have been available for around the same time as it. Most notebook PCs of a comparable age and type to it have an Intel Celeron processor family.
This laptop's processor family (Samsung Exynos) is in fact the worst processor family across all Chromebooks that were released more than two years ago.
The best processor family across similar types of laptop is NVIDIA Tegra.
Laptops with a better processor family that might also be worth looking at include the Toshiba CB35 (Intel Celeron), or the Acer Aspire One C720 (Intel Celeron) which also has a higher rating.