I always wonder if I had a 401k insteed of a state pension.

The period is from: 1969-1994. I received $1,000 a month for life.
Have already received $192,600

But what about other scenario. 401K investment plan during the same period.
Would it be better, the same, or worst??

Luckly those years were good financial years, not the current financial quandary
We are going through.

I am no financial wizard but I think it depends on how much you had to contribute to your retirement system while you were working (if any), what kind of cost of living increases you receive (and whether the increases are compounded) and what tax consequences there are with each type of retirement program. Also, there was a stock market plunge in 1987 that could have impacted the various investments.