Yep. Median wage in Belgium is ~3.5k euro / month, equivalent to ~3.8k USD / month. Median US wage is ~4.9k/month, about 30% higher, certainly not 150% higher.
Belgium is definitely an outlier. It's 2k after taxes and contribution in France (so like 2.9k/3.1k if you are working for the state or a private company)