Google Webmaster tools vs SeoMOZ Crawl Diagnostics

[Tolod]

Hi Guys I was just looking over my weekly report and crawl diagnostics. What I've noticed is that the data gathered on SeoMoz is different from Google Webmaster diagnostics. The number of errors, in particular duplicate page titles, content and pages not found is much higher that what google webmaster tools is represents. I'm a bit confused and don't know which data is more accurate. Please Help

[SteveOllington]

This will always be the case... there are different sources, and different interpretations of what constitutes errors. I wouldn't go thinking that just because GWT is Google that means it's the most efficient though, Google have a lot of other business to be thinking about and are unlikely to be too concerned if everything isn't perfect in their free GWT product, so I doubt it would take priority over other services of theirs. Where-as Moz of course is more focused in that particular area. I would just combine the two and iron out as much as you can from each... you'll never get them to match up though.

[JGar-28032]

I always make sure to manually check stuff on a regular basis as well as use tools. Tools are great, but like Steve said this is always going to be the case with software, especially in an industry as unregulated as ours.

Try to use the tools as a means of directing your attention to items that need it; rather than trusting them implicitly and using them as a checklist.

And again, Steve is correct in that Google's Webmaster Tools (as great as it is) can be a little dated. They will sometimes show errors that have been cleaned for a while. And keep in mind that seomoz tools are created within the context of SEO interests (Google will just show technical errors, SEO tools will show those, plus other warnings based on experience on things that will impact your rankings).

[ckilgore]

I've been having similar issues but more specifically, SEOmoz reporting dup content which I cannot even locate manually. Hoping to see something different with the next crawl but it has been pretty confusing over the last couple of crawls.

[Yorkie]

I had this on the last crawl.  There was no mention on the one before and I haven't changed anything in between so could be a glitch ?