My understanding is that the uploaded 34As are valid but the 34Bs have major problems and so are being done fresh at Bomas to match the 34As which are the primary unalterable documents (thanks to the Constitution and Maina Kiai taking the question to the High Court in 2017, thus decentralizing thievery to the 46,000+ stations and making it that more difficult). These re-done 34Bs are what Chebukati is announcing. So those doing math with the 34Bs on the portal will have wrong figures since some of them are off.
Explains the difference btw West/BBC and the Kenyan media figures, I guess, since the former have only been using the 34Bs on the portal. If you don't want to wait for Chebukati's declared figures, then you need to have done the 34As in order to know the eventual result before Chebukati.