TruEffect is leading in Top 100K Sites and Top 1M Sites.
Vizu has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Music & Audio, Food & Drink and 21 other categories.
TruEffect is leading in News & Media, Business & Industry, TV & Video, Philanthropy and 20 other categories.
TruEffect is leading in most countries, including United States, Japan, United Kingdom, Italy and 14 other countries.
Vizu is leading in Indonesia, Thailand, Netherlands, Philippines and 10 other countries.