USDC does seem better, but the last attestation is from April and there are reports that they've been running late a while [1]. That's not as bad as the competition but still seems very bad, given that stability is what they do? Especially since they haven't explained what happened as far as I can tell.

On the other hand, it looks like USDC's market cap doubled in less than two months, so I guess that's good for them?

[1] https://news.bitcoin.com/usdc-attestations-run-late-raising-...