No crypto received an A because Weiss makes their living off of banks. Note that none of the top grades went to coins that just supplant fiat? If interested in bias and methodological issues with these ratings check out my blog https://steemit.com/cryptocurrency/@thejosh/why-the-weiss-cryptocurrency-ratings-are-ridiculous-but-also-why-their-particular-brand-of-bs-is-good-for-crypto