Which interpretation is more appropriate?

The dialect was on her tongue to some extent, despite the village school: the characteristic intonation of that dialect for this district being the voicing approximately rendered by the syllable UR, probably as rich an utterance as any to be found in human speech.

Hi. I really want to ask which interpretation of “as rich an utterance as any” is more appropriate?
1) “the accent was on a par with the richest utterance to be found in human speech”
2) “no utterance to be found in human speech was richer than the accent”

Thank you.