If btc users save their coins, and they do not circulate, then btc which circulate gain in purchasing power. When I last checked, the velocity of btc was 5.93, which is comparable to usd. However, since btc is a superior saving instrument, being deflationary, this velocity is likely to go down, driving up the value of a btc relative to goods and services. You can't compare money supplies to estimate relative valuations. You have to estimate money flows, M*V.
What is the velocity you are talking about? Any sources, explanations?