Ceros is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Ceros has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Shopping, Finance and 86 other categories.
Whichit is leading in Sports and Alternative & Natural Medicine.
Ceros is leading in most countries, including United States, United Kingdom, Spain, South Africa and 51 other countries.
Whichit is leading in Malaysia.