Microsoft Windows: 5 bugs
Microsoft IE 11: 4 bugs
Mozilla Firefox: 3 bugs
Adobe Reader: 3 bugs
Adobe Flash: 3 bugs
Apple Safari: 2 bugs
Google Chrome: 1 bug
$442,500 paid out to researchers
Looking at these figures, am I the only one who think competitions are not the most effective method for finding bugs? Of course, 21 bugs is not small and $442,500 is not much, but when you think those researches spend months of their time for finding those bugs, wouldn't it be more appropriate to use that money on proper security audits? (I know it will cost more but would be more effective overall?)