How is this possible? (a question about MozBar and SEO)

I am analyzing SEO competition from other websites. When I open MozBar tool to check those websites I see:

#1 web in Google Results:

PA 1 and DA 1 0 links

Others results are normal, PA/DA information + links etc...but I can't check it with MozBar and I don´t know what happend.

Did they block Moz's crawl or something like that? Maybe a bug?

I haven't see this before and I'm surprised.

Thank you very much

I wouldn't be too concerned about what moz does and does not think about sites. I would take their metrics with a pinch of salt.