The data is on average base salary. Nearly half of my total comp is stock plus guaranteed bonus. That's how my total comp is $200k+ with 1 yoe at a low CoL city.
I don't know of many engineers with salaries of 200k, but many who will make more than that when you include stocks and bonuses.
I got what I thought was a pretty good low CoL offer as a new grad for $95k base (+maybe $10k-20k bonus?). Haven't heard of people getting such high offers as yours in low CoL areas except for small offices of tech giants