I don't have data to support my conclusions, but there's really no difference between large agencies like the FDA and other countries' equivalents, which in Germany is the Federal Ministry of Food, Agriculture and Consumer Protection. While food purity and safety regulations are largely similar, they do label food differently. Of course most products are labeled multilingual due to tourism and exportation.
They typically list nutrition data based on manufacturer-decided serving sizes, but they are required to list 100g serving size data too, so there is a standard by which to compare nutrition data of products. They also list energy in joules (and also sometimes in calories), and they don't round. You will regularly see products with 78 calories, not 80 as you'd see in US products. The grams of macronutrients are also listed, rounded to .1g. So you may see 2.3g of fat listed on the label. I'd imagine this makes everything a bit more accurate, and much easier to compare with 100g standard labeling. I'll try to find a picture.