According to the research the iPad Pro shifted ‘just over two million’ units while Microsoft mustered 1.6m Surface devices during the same period.
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The figures relate to so-called detachable devices which are designed to be used primarily with keyboard accessories, rather than tablets like the iPad Air.
"This quarter was unique as we had new detachables in the market from all three of the major platform players," IDC analyst Jitesh Ubrani said.
"Despite lukewarm reviews, the iPad Pro was the clear winner this season as it was the top selling detachable, surpassing notable entries from Microsoft and other PC vendors."
Related: iPad Pro vs Surface Pro 4
Ubrani said the launch of so called ‘detachables’ have created some great opportunities for Apple and Microsoft, while Google has a lot of work to do to get its Pixel C range over with the masses.
He added: “Google's recent foray into this space has been rather lacklustre as the Android platform will require a lot more refinement to achieve any measurable success."
As we’ve learned from the wild estimates of Apple Watch sales, figures from researchers can be taken relatively lightly.
However, this is the first indication of how the iPad Pro may have sold. During its earnings report last week Apple said it had sold 16.1 million iPads in total during the three months leading up to Christmas.
The firm stopped short of breaking those figures down into specific models.