DoubleClick Spotlight is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
TradeTracker has better usage coverage in more websites categories. Including Travel, Shopping, Arts & Entertainment, Internet & Telecom and 96 other categories.
DoubleClick Spotlight is leading in Autos & Vehicles, Car Buying, Business & Industry, Automotive Industry and 93 other categories.
DoubleClick Spotlight is leading in most countries, including United States, United Kingdom, Canada, Australia and 95 other countries.
TradeTracker is leading in Netherlands, Hungary, Belgium, Poland and 46 other countries.