If you look at the balls sales of the U.S. vs Eastern countries. Bowling appears to be far more popular and a lot bigger consumer in buying bowling products.
That being said they get all of the same release we do plus many extras we don't along with other companies we don't.
With what I've seen in most cases they get more releases in a series from manufactures then we do. Like when we just got the Ebonite Total NV they already had released 3 to 4 in the NV series overseas. Goes the same for most companies. More demand, equals need for more product supply.
What I've noticed is many of the companies won't have as big of a performance gap between bowling balls or a series or bowling balls. They usually mix and match more cores and covers to create more product for a variety of conditions.
Along with some new cores or covers we may not see.
I will admit I'm surprised Brunswick doesn't release the Diamondback Pearl here. It is one of the strongest pearlized bowling balls I've ever thrown. It can handle oil, and is extremely aggressive on the backends.
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" men lie, women lie, numbers don't "