It doesn't look like the demo because we have tried to build the CSS in such a way that it matches with your template CSS. There is a CSS folder within the component itself. You can make changes to that CSS file in case you need any.
It's the same Menu module. You just need to set the top-rated ordering in that module parameter to let it display most popular Menus. This module along with 3 other modules is available in restaurant package itself.
I try to let my Restaurant component look like you life-demo.
But it looks different (see screenshot).
And I couldn't find the "Most Popular Menus" module at all...
Thank you for your help.