200k over four years, less taxes, which will be maxed because you'll realize all of the earnings as income in one year. So around 30k a year take-home. Maybe slightly more than the standard 10-15% salary bonus of an intermediate engineer at BigCo, but it's not why the guy is working at the startup, or at least I hope it isn't for his sake.
Sure, I definitely agree that - in general - "employee number 10" and later aren't going to get rich from their startups. And hopefully they aren't expecting to. Better, yet, hopefully the company goes public are more like a billion dollar valuation, so that they do get rich even if they only own 0.002 worth. :-)