Mercent is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
OMG has better usage coverage in more websites categories. Including Shopping, Coupons, Business & Industry, Travel and 77 other categories.
Mercent is leading in Clothing, Health, Games, Home & Garden and 45 other categories.
OMG is leading in most countries, including India, United Kingdom, Poland, Russia and 38 other countries.
Mercent is leading in United States, Canada, Italy, Bosnia and 23 other countries.