the top link is a crawl of a article wrote in 2013
https://bitcoinmagazine.com/articles/bitcoin-developer-receives-first-butterfly-labs-asic-1364858475it was
by Vitalik Buterin
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12:21 AM GMT Daylight Time
April 2nd, 2013
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the second link is from january 2015
http://coinjournal.net/return-butterfly-labs/By Oliver Carding - January 8, 2015
i think google 'dun goofed' and recrawled old websites.. maybe google found the articles had been updated is some minimal way (spelling mistake or update of website code) that tricked google into thinking it was a new article.
to me this is just a failure on googles part