Quote Originally Posted by Anon View Post
Does anyone know what those drop rate boosts (small, medium, large, extra large) actually mean? Like how they compare to luck stat? And is 30 luck better than large drop boost?
From what I understand on the Japanese Wiki, "Boost spoils of war" raises the droprate by a percentage. Apparently, Extra-Large raises droprates by 50%, so if items/senki have a 10% droprate, it's increased to 15%.

Luck only affects the bonus rewards chance obtained after a battle. So Spoils of War would be better for farming senki-fodder or evolution materials, while Luck can nab you extra rewards specific for end-of-battle bonuses, such Daruma in the Dojo or even an extra Non-human from the daily events.