Comscore Ad Metrix provides the best instance of measuring the digital landscape at scale. They have a huge amount of the internet crawled with focusing on just this case.
We use both tools, but Ad Metrix helps significantly for determining industry trends and other more helpful data. We are actually in the process of removing the other tool since Ad Metrix gives us what we need.
They're both fairly similar in relaying data for us on our viewers. We've used comScore longer and are able to compare specific data to one another as well as competitor sites.
I use all three. Personally, I do not like Omniture. It feels clunky and I have to dig to find what I want. I use Google Analytics everyday just because of how much of an industry standard it is. A lot of clients also will use the Google Analytics tool and come to us with …
Ad Metrix is well suited for teams that are directly tied to sales teams as well as teams that use DMP and other platforms to help target and retarget specific users for ads or site visits/views.
It may not be as useful if the organization is not targeting specific users or isn't interested in their consumption habits and what competitors are focusing on.
Site Analytics data - ComScore puts all of the stats you need in an easy to read dashboard. I don't need to search around like I do in Google Analytics to find out who is visiting my client's site, where they are browsing, how long they are engaging with the content. It's also really easy to integrate conversion data alongside website analytics. The webpage heat maps are also an awesome way to look at where people are engaging with the client's webpages.
Infographics, charts - I love how easy it is to pull a client ready chart that I can insert into a presentation for the client to show various stats pertaining to their campaigns (e.g. most visited pages, most viewed videos, MoM stats on orders/revenue/average order value.
Report Builder - Makes it simple to pull reports on site analytics that I can easily add filters to. I can get all the data I need in one report. I do a lot of presentation building for the clients on a monthly basis. This makes it more efficient for me to pull out sharable insights.
The staff is available pretty quickly for questions, but are not really around in-person to meet with me and my team. They are able to solve my problems online and do work sessions as needed via skype.
They're both fairly similar in relaying data for us on our viewers. We've used comScore longer and are able to compare specific data to one another as well as competitor sites
I have not used the tool long enough to determine myself, but my understanding is the team has been able to drive growth and sales significantly through the use of the tool.