For native English speakers, Japanese is supposedly a language of Class 3 difficulty, with German having a Class 1 difficulty (1 being easiest, and 3 being hardest). Not being a native speaker, and considering sentence structure is reversed, I'd say Japanese would be a harder language, though I don't know German.

Yeah, but German is rather difficult too.
With all the different cases.
It's annoying at first.
But eventually you just "know"
how to use them.

Kannst du etwas Deutsch sprechen?

Oh and you should probably learn Hochdeutsch.
It's the standard.
Then if you want, you can learn something ridiculous.
Like Bayerisch.
XDD

there's a really good website called elanguageschool.net where you can learn many different languages, including german!

For me, German would be harder because I wouldn't be able to pronounce the words as easily since it sounds like it all comes from the throat.