ISB (YLP) VS. B-Schools abroad

i’m a pre final year student and have applied for the ISB-YLP program. i’ve cleared the first round and i’m preparing for the GMAT. one question which has recently struck me while preparing for the test and looking at required scores for vario…

i'm a pre final year student and have applied for the ISB-YLP program.
i've cleared the first round and i'm preparing for the GMAT.
one question which has recently struck me while preparing for the test and looking at required scores for various colleges across the world is -
IF i get score of something like 700+ (say a 720,730) WHY should i apply for the ISB if it's possible for me to get admission in top colleges in the US? many b-schools' average GMAT score is 700 for acceptance.

- is ISB a better option than the US?
- what kind of colleges can i expect to get with a score of 700+ and a couple years work ex? (ISB YLP requires about 2 years after graduation)