mParticle is leading in Top 100K Sites.
Observer has better usage coverage in more websites categories. Including Business & Industry, Computer & Electronics, Arts & Entertainment, People & Society and 25 other categories.
mParticle is leading in Restaurants & Delivery, Food & Drink, Banking, Finance and 3 other categories.
Observer is leading in most countries, including United States, Russia, France, United Kingdom and 9 other countries.
mParticle hasn't got a lead over Observer in any country.