The submission form [1] asks explicitly for what would appear on your W2 (ex. vested value). Part of the reason why comp packages have been so high in last 1-2 years is that stock grants that were given to employees 2-4 years ago have shot up in value via a bull run stock market. To attract these employees, companies have to outbid their current expected take-home pay. Thus the vested value is actually most relevant when you are comparing your current compensation and new offers.