In terms of market share, Didit is clearly lagging behind, losing to Visible Measures in all segments.
Didit has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Medicine, Health and 3 other categories.
Visible Measures is leading in Marketing & Advertising.
Didit is leading in most countries, including United States.
Visible Measures hasn't got a lead over Didit in any country.