This info is definitely not lost in translation with the universal language of numbers. According to Capcom's own sales records (chart after the break), neither Lost Planet nor Dead Rising broke 100K units sold in Japan. This isn't really the most shocking of news given the sales of the Xbox 360 in Japan, but it does show the game resonated with North American and European audiences more. Despite tepid sales in Japan, both titles sold outside the Land of the Rising Sun to the tune of 1.4 million copies each, signs of Capcom's growing global focus.
Now, before you go pointing at cultural differences -- highlighted by Monster Hunter Freedom 2 for the PSP selling 1.2 million units, while the PS2 versions of RE4 also couldn't break 100K -- here's some fun info: Grand Theft Auto: San Andreas, which was published by Capcom in Japan, sold 430K units. So, frozen tundras don't resonate with Japanese gamers, neither does a mall full of zombies, but playing a gang-banger bent on ghetto domination sells 200% more than Dead Rising and Lost Planet combined. Ah, good times.