It'd be of similar quality, although no two speaker systems technically sound the same.  I'd say you made a good purchase.  Set up your tones to work well with the Yorkville, and you'll be good to go.  If you ended up getting the Roland later, you'd have to re-tweak your patches to sound best with that amp.

If you're wanting some suggestions, here's one:  I personally use a 12" powered PA speaker for my POD HD500 when I play live.  That way, when I play a gig somewhere where there's not enough monitor mixes, I just pipe a mix into my speaker and I'm good to go.  I've found I play a lot of gigs where there's only one monitor mix, which is usually set up for the lead vocalist.  This way, I just set up another aux send and feed it to my monitor.  If I know the place I'm playing has a good monitor setup, then I just leave my speaker at home.  I'm all about keeping my gear to a minimum these days.  Having to load in just a guitar or two and one POD / accessory bag is great, especially when I get to watch others bring in heads, cabs, guitars, effects, etc... just to get a couple of perfect tones that few, if anyone, in the audience notices anyway.