Quote Originally Posted by Niwashi View Post
You can inspect other characters to see their gear. It doesn't total all their stats (except for average item level) but you can see the stats of each individual gear piece and compare it to your own. It's limited to what they're currently wearing, though, so no checking what they would have with a different job or different gear set.
To add to this, you might be able to check their character on the lodestone as well. You will see all the stats there provided it's showing you the correct job.