Brave is a great product, I do not argue with that.
They have a strong team and a big budget. (They attracted on ICO $ 35kk in may 2017)
Snax small team of enthusiasts. We develop our product without raising funds. We did not conduct ICO and started development only in November 2018. Snax is not listed for trade on exchanges yet, but we are negotiating and working on it. Snax is a separate chain, it makes listing on exchanges more difficult, we need to build a bit larger community

The actions of the regulators are not predictable now, here is an example: https://cryptoslate.com/cryptocurrency-airdrops-and-bounty-campaigns-face-sec-hammer/ We will be anonymous until we are convinced that the rules of the game are established by the regulatory authorities and are understandable.
We are an international team, and we do not only live according to US laws. What is legal in EU and Japan can be illegal (but it's not exactly, only SEC knows) in US. We haven't money to hire lawyers all over the world. We know, that we don't deceive people.

The whole code of snax extension is open sourced. We use clipboard permission to copy mnemonic phase which can be used to create an asymmetric private key. Also we use it to copy your export private key. You can check it here: https://github.com/SnaxFoundation/snax-browser-extension