North America and Asia phones.

[Estylo]

Hey everyone, I've had a Blackberry Pearl for 3 years and am now a current owner of the Evo 4g (week after launch). I've been researching a lot on smartphones as of late and about my own phone, but what I have been wondering is, are the phones in Korea/Japan still that far ahead compared to the phones we have here? South Korea has the Galaxy S being sold there (300,000 already) so in addition to my previous question, why would either invest on a phone that is not up to par with their higher quality phones?

Thanks in advance!