Peerius is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
WordStream has better usage coverage in more websites categories. Including Business & Industry, People & Society, Relationships & Dating, Autos & Vehicles and 42 other categories.
Peerius is leading in Shopping, Clothing, Home & Garden, Consumer Electronics and 30 other categories.
Peerius is leading in most countries, including Great Britain, Germany, Austria, Switzerland and 36 other countries.
WordStream is leading in Netherlands, Canada, Mexico, Czech Republic and 3 other countries.