Not really retirement, but 200k in equity payout for a senior engineer isn't exactly rare.
I'd call 200k a "decent enough exit to pad a good nest-egg". It's not fantastic, it's not going to create a nest-egg, but it will "pad" a good nest-egg.
What? So 1 in 15 startups makes a big enough exit for not only the executives, but run of the mill engineers to have a good retirement? What universe is this guy from? I want to live in that universe!