Damnit, I turned down a follow-up interview with Giphy years ago since I didn't think they were sustainable and I had been burned by startups in the past. Shows how much business sense I have!
You can't look at these numbers in a vacuum.
Equity for employees is trash value. You would do well to just pretend it doesn't even exist when factoring decisions about where to work or if to change jobs. I never ask for equity, I never care about equity. I care about the salary.