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That link has an incorrect summary! It links the Doctor of Credit page about the same topic as its sources, but that page only says one datapoint seems to say a Barclay business card reported back in 2011 to TU, while several other posters say they didn't report:

http://www.doctorofcredit.com/which-...-cards-report/

So IMHO the link you gave should have at most put Barclay into a YMMV category, not into the same category as Capital One which everyone knows reports business cards to EQ/EX/TU.

But there don't seem to be a lot of Barclay business card datapoints. Perhaps not that many people apply for Barclay business cards? It certainly doesn't help that the US Airways business card went away a couple years ago and that while Barclay says they're going to introduce an AA Avaitor business card sometime this year, no one has seen a trace of an application so far.