Great suggestions for future versions! I'm sure @AnkerOfficial and @AnkerTechnical are listening 
To recap the main differences between these and the SoundCore Space...
We're looking at 2.5 hours to charge vs 3, and the design is a little different, as @ndalby mentioned. This leads me to believe it's a smaller battery because the input appears to be identical.
These are also slightly heavier at 288g vs 259g (10oz vs 9.14oz).
Impedance is 16 vs 32.
Everything else looks to be the same (driver size, frequency response, BT version/range, etc.)