"performance differences" is correct and usable in written English.
You could use it in a sentence like: "The performance differences between the two teams were evident during the game."
In order to rationalize performance differences a PCA was performed.
Here we briefly discuss how these performance differences are a product of the different methodologies employed.
Lift this threat and performance differences disappear.
There were no group performance differences.
So where else, exactly, do performance differences come from?
They're meant to highlight key performance differences between similar devices.
It is unclear whether that difference may lead to potential long-term performance differences.
But, he said, it is difficult to measure performance differences among products.
We searched for behavioral differences that might explain the specific performance differences we had discerned.
A whopping 46% of scoring variations could be tied to consistent individual performance differences across interactions.
We provide experimental evidence on when and how informational differences translate into performance differences.
