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iPhone is going to make a killing overseas.

1. After saying the above, I feel like saying it's not going to sell as well in the US or something like that, how should I transition elegantly to my point? "Than"?

Thanks.
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iPhone is going to make a killing overseas......

But it probably won't do as well in the US.
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iPhone is going to make a killing overseas, while its success in the U.S. is more doubtful.
CJ
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Comments  
Thanks, Philip.
 CalifJim's reply was promoted to an answer.
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Thanks, Philip and CJ. Good suggestions.