It folds, as Jools mentioned, like a book. VERY compact fold, imo. You should see the box it comes in
It is tall, meaning the handlebar is quite tall.
The fold is just 'different'. Not necessarily bigger. The Mac will fold more length wise, where the BJ folds more flat and more like a square shape. Does that make sense?
Oh, and yes it it much smaller than a travel system.
I like the fold because it is one handed and there is no foot action, or pushing the stroller to the dirty ground, then having to lean over and pick it up. OH, and there is no locks to undo to unfold it.