When equity compensation is such a high proportion, one can not simply compare numbers. You have to take into account volatility of the business and its impact on share price (and hence impact on your compensation).

The equity compensation figures on levels.fyi are very rough estimates on what one might sees, but it is possible that Meta has to offer more equity due to more perceived volatility in its business rather than, say, Apple or Microsoft. Or maybe more expected work hours/days.

But also, Meta has long been known to pay more, famously being the business that eschewed the collusion that resulted in the famous high-tech employee antitrust litigation:

https://en.wikipedia.org/wiki/High-Tech_Employee_Antitrust_L...