You can buy 8000 tokens in 1 USD when price of bitcoin is 8000 USD but if bitcoin price will rise to 16000 USD then you can buy 16000 tokens in same price. Now all token price does not move according to BTC price,it will drop 20-30% without any sign of drop, but when you will compare with bitcoin you will find that you are in loss.
The price of the token is determined by the developers and as an investor you need to assess the project and you determine whether it is a viable project that can sustain and if everyone does that then we will not have these situation of people running away with money and valuations going down.
If you are foolish enough to invest in it thinking that it would give you the profit well above
BTCitcoin who is at fault. The token projects are experimental and there is no guarantee that it would give you the profit. People usually dump the coins once they hit the market and only a few tokens are still surviving.
BTCitcoin is currency and if you are looking for profits then hold onto it rather than investing in tokens.