Ok, so today I noticed there's a huge difference in numbers between Google analytics report and the Awstats reports, everyone does. I know Google analytics is more accurate to learn how and why people visit each page, how long they stay on each page, which page visitors leave the most, etc.

But when it comes to gather traffic information to show advertisers of the traffic progress such as pageviews and visits numbers, which one does provide better pageviews/visits traffic accuracy?