Dual-hose cooling route
The dual-hose layout is the most important practical difference here, because it separates intake and exhaust rather than making the machine fight its own airflow. That matters in real use when a room is warm, sunlit, or simply larger than a small bedroom.
It gives the unit a better chance of keeping up without sounding overworked, and it is one reason this model makes sense for buyers who care about cooling efficiency more than minimal footprint. The downside is that hose management becomes part of the routine, so it is a better fit for a room with a sensible window position than for a cramped corner.