1: Bitcoin is far more portable than gold. You can send it anywhere in the world instantly for a trivial fee.
2: Bitcoin transactions can be instantly and remotely verified. It’s impossible to fake a Bitcoin transaction. Verifying receipt of gold bullion is an expensive, error-prone, and physical process that requires either trust or expertise in gold assaying.
3: A bitcoin is divisible into 100 million satoshis. Gold bullion can be expensive or impractical to split into tiny fractions.
4: The supply of Bitcoin is completely independent of the price. The creation of Bitcoin follows a fixed schedule with a hard limit of 21 million. The supply of monetary gold increases when the gold price goes up, due to increased mining and redirection from industrial use.
6: Bitcoin currently has limited vendor acceptance, but you can use Bitcoin debit cards with point of sale conversion to fiat. Gold can be used as a store of value, but in most of the world, it involves much effort to be exchanged for goods. There is already one country that uses Bitcoin as legal tender (El Salvador) and this number is likely to grow.