There is a difference, one is Bitcoin, and one is SBD. It's like comparing the U.S. Dollar and the Peso. The Dollar holds more value than the Peso because it is accepted in more places around the world. USD is more useful than Pesos.
Is it because BitCoin was first and has better name recognition?
Somewhat, yes. Bitcoin has been around for a longer amount of time, and it is very established and accepted as payment for so many different things.
The value of SBD may skyrocket and surpass Bitcoin. At the same time, it is possible that Bitcoin's value will take a dive. It just depends on the market.