Decibel Insight is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Decibel Insight has better usage coverage in more websites categories. Including Business & Industry, Shopping, Internet & Telecom, Arts & Entertainment and 84 other categories.
Marktest is leading in Newspapers.
Decibel Insight is leading in most countries, including United Kingdom, United States, Australia, Germany and 48 other countries.
Marktest is leading in Portugal and Poland.