petey hunter said:
WHAT ARE THE MAIN DIFFEENCEs which one is better
(sorry caps lock)
state the difference and yor opinion
(Don't just say "Western rpg's rule, you got to say WHY)
I was going to scream until I read your question. For asking the difference, I approve. For asking which is better...I'll settle for glaring in your general direction while I write.
Western RPGs followed more closely to the path originated by tabletop RPGs. Character customization is usually key, quite often a character the player builds themself (not always, though, see Planescape Torment for an exception). This usually includes both skills and appearance. Alongside and combined with this is the idea of nonlinearity in story and gameplay, which most western RPGs at least pay lip service to. This is much like, say, a standard game of Dungeons & Dragons, where the DM has the players make characters.
JRPGs focused on a different aspect of the original RPGs (and closer to other console genres), that of storytelling. The characters in the game are usually already present, and character customization is usually limited to skills (and rarely to appearance). In essence, rather than ask the player to create a character or characters and flesh them out in their minds, they give the player a preset party, sacrificing player choice for the ability to create greater characterization and a more fluid overall narrative. To continue the D&D metaphor, this is much like players using characters a DM has already rolled up (and thus better knows the capabilities of).
One thing that's usually lost in these discussions is the issue of medium. The original WRPGs were, as a rule, computer based, while the original JRPGs were console games. The capabilities of both type of system were instrumental in the divergence of the two genres, and by the time their capabilities started becoming equal, certain aspects had already become staples.
While both genres have their strengths (WRPGs for custom play, JRPGs for story), the ideal game is one that doesn't specialize so much as to sacrifice either narrative (I've heard good things about KotOR or Mass Effect, in this sense) or gameplay (many Tales games and Skies of Arcadia are good examples).