Yes, the points system is applicable even for the Australia Subclass 190 Visa. The minimum points that need to be scored by the applicants are 65. The test for points is the same for Subclasses 190 and 189.
The fundamental difference between Subclasses 190 and 189 is that in 190 an applicant is nominated for the Visa by the State. The additional 5 points as per the points test will be contributed by the State.
However, when it comes to Subclass 189, the extra points are not applicable. Additionally, the applicant has to initially remain for 2 years in the State that nominated them under the Subclass 190.
Whereas, under the Subclass 189 Visa, there is no such restriction and the applicant can reside anywhere in Australia.