That's all very funny.
So, according to the Trumpletons, Robert "Witch Hunt" Mueller is now the epitome, the very decider of truthfulness.
Seemingly, Carr's rebuttal only tangentially affects the BuzzFeed article:
“BuzzFeed’s description of specific statements to the Special Counsel’s Office, and characterization of documents and testimony obtained by this office, regarding Michael Cohen’s Congressional testimony are not accurate,” Carr said.
Now, let's look at the BuzzFeed article, keeping in mind that Carr isn't disputing the "specific statements" occurred, and neither that Mueller has obtained "documents and testimony" on the matter:
President Donald Trump directed his longtime attorney Michael Cohen to lie to Congress about negotiations to build a Trump Tower in Moscow, according to two federal law enforcement officials involved in an investigation of the matter. [...]
The special counsel’s office learned about Trump’s directive for Cohen to lie to Congress through interviews with multiple witnesses from the Trump Organization and internal company emails, text messages, and a cache of other documents. Cohen then acknowledged those instructions during his interviews with that office.
Now, what about the above may have been mis-described or mis-characterized? Did Mafia Don actually direct Cohen "to lie"? Or did he rather say, "It'd be rather unfortunate if Congress-critters were to get away with the impression that our Russia deal was still in the making while primaries were going on," or something to that effect. Still, Cohen, useful underling he used to be, knew exactly what he had to do, and he lied to Congress on behalf of the Mafia Don. Also of note, that very same Mafia Don - following his invincible aversion to all half-truths, untruths, or misleading statements - didn't see fit to correct his underling, and to set the record straight with Congress, say, that Cohen's testimony to the effect that negotiations ended in January was erroneous.
So, yes, Cohen was lying to Congress on the Mafia Don's behalf, and the Mafia Don let it stand; BuzzFeed probably should not have said the Mafia Don explicitly directed Cohen to lie. Because that's what Mafia Dons do not do.