I would think V'ger annihilating three Klingon warships would be enough for that rather than also including the destruction of a seemingly unarmed space station especially since the Klingon battle actually gave an impression of how unstoppable V'ger seemed whereas all you get from Epsilon 9 is that it's capable of destroying a defenseless com station(?).
What makes the digitizing of Epsilon 9 so chilling was that the Starfleet crew on the Enterprise had just finished watching the footage of V'ger destroying the Klingons and now it was happening again - live!
- to friends, relatives, colleagues. And all they'd done wrong was a scientific scan.