They've done well with the reading -voices-, and enunciations. But the readings themselves are, well, hilariously revealing in many ways. Odd pauses like 'Winnie. The poo...', or word-bunchings, mispronouncings, sudden unexpected volume changes, etc. become a constant distraction. All parties in fictional conversation sound much alike ... who's talking now?
In short, voice-animation pros should not be too worried. Yet.