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Say the facts are

  • Method A produces score of 101.
  • Method B produces score of 102.

when using data set 1, but when using data set 2:

  • Method A produces score of 100.
  • Method B produces score of 1000.

Method B is better than Method A in both datasets; what I want to say is Method B performed much better with dataset 2.

Is the following sentence correct?

Method B outperforms Method A in a greater scale in dataset 2 compared to dataset 1.

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Would you please replace the '->' with words in your question? It's not at all clear what you mean. Do you mean that method A receives a rating of 101, or produces a result of 101? Also 101 is less than 102 but 1000 is greater than 100 so in data set A, method A does not outperform B at all. – Jim Feb 16 '13 at 22:39
@Jim I have edited the question – william007 Feb 16 '13 at 22:48
@FumbleFingers I have edited the question – william007 Feb 16 '13 at 22:48

Method B, which performs little better than A with dataset #1, outperforms A by a far greater margin with dataset #2.

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I have edited the question, could you kindly take a look again? thanks. – william007 Feb 16 '13 at 22:50
@william007: I've edited the answer accordingly. It's still the case that idiomatically you'd talk about by a greater margin (or more decisively, etc.) rather than [on] a greater scale, which has different connotations. Note that we don't normally speak of anything being in a greater scale. – FumbleFingers Feb 16 '13 at 23:02

I think you are looking for:

Method B outperforms Method A to a greater degree for Dataset 2 than it does for Dataset 1.

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