What I couldn't tell, was which version of WSL the Store version gives you! I think it's heavily hinted that it's WSL2, but if it's in black and white, I'll be damned!
https://devblogs.microsoft.com/commandline/the-windows-subsy...
Also, that last paragraph does somewhat read like the death knell of WSL1 in that it implies all future features will be Store delivered (and thus WSL2).