If one considers that the universe is becoming less dense from the creation event until today and into the future, then by General Relativity the passage of time passing more slowly from the current viewpoint of Earth, I believe it can be demonstrated that appx 4.5 billion years can indeed be the equivalent of 6 days.
Seems that evos, while hung up on evolutionary theory, are pretty weak in their understanding of physics, especially in regard to time dilation.