Japanese Lucario's are being overly flashy.
They approach when they could camp at higher percents, since AS at higher percents becomes an overall better projectile in terms of outcamping some characters and increasing in size, damage, and knockback.
They use mixups that are riskier, like trying to frame trap with dsmash.
I do have to admit that they use their full hop vertical zoning a lot more than their American counterparts, which is both good and bad.
They really like uair, which I think is because it gives the appearance of a dramatic height change in character before coming down with dair, which I guess helps in terms of "mindgames".
I think the characters that tend to play more "campy" there from what I've seen are Falco, Pit, and Fox, and even then, depends on how you view what's campy or not.