MetriWeb is leading in Top 10K Sites and Top 100K Sites.
WordStream has better usage coverage in more websites categories. Including Business & Industry, People & Society, Relationships & Dating, Autos & Vehicles and 50 other categories.
MetriWeb is leading in Arts & Entertainment, Jobs & Employment, News & Media, Music & Audio and 8 other categories.
WordStream is leading in most countries, including United States, United Kingdom, Switzerland, Mexico and 12 other countries.
MetriWeb is leading in Belgium, Luxembourg, Netherlands and France.