Based on what data? According to their reporting they have around 200 Million monthly users, which seems compatible with 470k crashes a week? See <https://data.firefox.com/dashboard/user-activity>
2% worldwide? https://gs.statcounter.com/browser-market-share
Granted, they're probably just as accurate as netcraft. /shrug
2% worldwide? https://gs.statcounter.com/browser-market-share
Granted, they're probably just as accurate as netcraft. /shrug