Marktest is leading in Top 10K Sites and Top 100K Sites.
Photoslurp has better usage coverage in more websites categories. Including Shopping, Clothing, Jewelry, Consumer Electronics and 9 other categories.
Marktest is leading in People & Society, Arts & Entertainment, Music & Audio, News & Media and 5 other categories.
Photoslurp is leading in most countries, including Spain, United Kingdom, United States, Germany and 5 other countries.
Marktest is leading in Portugal, Poland and Brazil.