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, Health and 89 other categories.
Marktest is leading in Newspapers and TV & Video.
Decibel Insight is leading in most countries, including United Kingdom, United States, France, Germany and 52 other countries.
Marktest is leading in Portugal.