What is the difference between a JRPG and a WRPG?

[Mnementh]

Well, as I assumed everyone defines it differently.

For some a JRPG is simply any RPG developed in Japan. For others differences in gameplay, artstyle, character-development or story make a difference between J or W. These criteria are also differing defined, some here claim JRPGs have less, other claim they have more character-development than WRPGs.

After all the classification in JRPG and WRPG makes no sense, thank you to clarify this.