Board Thread:Game Discussions/@comment-24544589-20140217012738

You should not open chests and expect epics instead open them for the fusion boosts only that is the only smart thing to get them for because the percentage of getting an epic from a chest is only 2% and a two star is 60%, three star 30%, four star 8%. So the chances of getting an epic is not high at all compared to the chance of a two star. However this example of percentages are known to change with the event happening at the time like a 3x/4x chance for epics. 