Now, for EMP weapons - you can see the description of the stun effect. 

It even works for the death EMP of a Loyalist or Aeon's Chrono Dampener.

Enjoy!

Notes:

The stun radius works slightly differently than the regular damage radius (it just ignores hitboxes), but it feels too complicated to explain in the database itself.

Also, the Loyalist's stun does not stun air units, but it works differently than the category filter - it's hardcoded differently in the Lua code and not shown in the database, since it doesn't seem worth hardcoding extra conditions.