This is dissembling by picking the metric that measures literally the exact opposite of productivity. SAP has the same number of employees (more?) as eg FB but its net income is 1/10th.
I guess not (honestly don't know) but if there aren't then that seems to be more evidence in favor the idea that American devs are more productive, not less.
SAP?
>SAP is the largest non-American software company by revenue, the world's third-largest publicly traded software company by revenue