This is a comparison of the loot lag differences between KMS and JMS when played from where I live in the United States. The results may vary from person to person, depending on location and internet speeds. Moreover, this video was done for fun, just to see how the two compare side-by-side, so please do not take this comparison to heart.

Both games were played on the exact same computer with the exact same internet connection. Both games are routed through a high speed anonymous proxy for maximum (and equal) result; one for Korea and one for Japan. Both proxies avaraged 187 Ping and are hosted by the same company [who shall remain nameless].

As you can see, the loot lag on KMS, from my perspective, is a lot worse than it is on JMS. This makes collection quests hell in comparison. :P