Quintus vs. Landline

Hi. When I actually signed up for a site (about a year ago, even though I’m just getting it running), I purchased the Quintus theme, but the person that has helped me put the site together evidently didn’t like Quintus and changed the theme to Landline without telling me.

So I am wondering what the impact of this is. I chose Quintus to get a responsive layout and mobile friendly site. I can’t seem to tell if Landline also offers these things. Can anyone tell me if Landline has the premium features that Quintus has?

Thanks!