Marktest is leading in Top 10K Sites.
Photoslurp has better usage coverage in more websites categories. Including Shopping, Jewelry, Clothing, Finance and 6 other categories.
Marktest is leading in People & Society, Arts & Entertainment, Music & Audio, News & Media and 4 other categories.
Photoslurp is leading in most countries, including Spain, Netherlands, Switzerland, Germany and 4 other countries.
Marktest hasn't got a lead over Photoslurp in any country.