I don’t think they were the same difficulty at all as some of the upper divs. Classes like CS 170 (Efficient Algorithms), Cs 189 (ML) and CS 182 (Deep Neural Networks) were all significantly more difficult than any 61 series class.
Of course a computer scientist would call out my imprecise language. :)
What I meant was that it's difficulty was in line with expectations for a lower division course given the difficulty of the upper div courses in the same major.
