@darren @EpiphanicSynchronicity

For context, here we are talking about two apps that both store data as Markdown files and they can even be used together to some degree.

The main difference is that Logseq is an outliner, so it mainly stores Markdown indented lists.

A Logseq user controls how much extra syntax to adopt just like does an Obsidian user with plugins like Dataview. So my argument is that there is not much difference in practice.

Additionally, I pointed out that a big part of Logseq are queries and you can use Datalog, that is a query language just like SQL but more expressive, used for example in Machine Learning.

Obsidian users known about Markdown but miss that it is not the only standard that can be adopted. Retrieving notes is a key feature in any PKM system and so it is valuable not to reinvent the wheel. Logseq using Datalog (both internally and exposed to the user) is a major selling point. This is just an example.

The big difference instead is Logseq being FOSS for the reasons I stated.