There is no difference in market conditions between the two accounts.
You will see the same prices, spreads and market movements on both.
The main difference is that a real (Live) account is trading with your own funds.
In terms of spread, ROYAL gives you the freedom of choice to select between either Standard or Pro spreads.
You can choose either on the registration pop up page after you have downloaded the demo platform for the first time or when you select Open an Account from the File tab.