Firefox is thrashing Google's Chrome where it calculates, in the number of users running each browser, a Mozilla director argued Thursday.

Mozilla's executive of society development, made the case that Firefox's expansion is not lagging following Chrome's, as data from multiple Web metrics companies has indicated for the last six months.

According to measurement dealer like California-based Net Applications, Chrome's browser practice divide expand now frequently outpace those of Firefox.

In April, Net Applications' data had Chrome adding 0.6 of a percentage tip of split even as Firefox added only 0.07 of a percentage point, or just over an eighth as much.