The tweet by ArthurB suggests that Tezos is a "Killer" and @david99a responded with excitement that this could be a real win. This could mean that Tezos is a better investment than other projects and could potentially result in a 1000x return. When Dogami was mentioned, it is likely referring to a cryptocurrency project that is similar to Tezos. The conversation between ArthurB and @david99a suggests that Tezos might be a great investment option and could potentially result in a huge return on investment.