Yep, wouldn't really expect anything less from Sony, and they seem to be puzzled as to why they can't make any ground in the smartphone market.
I see the X performance as a baby flagship, they've reeeeaaaaally neutered the battery on that. Waaay too small.
If they think of it as an actual flagship the Z6 better not come with the same capacity battery otherwise I would be really miffed. (mainly because I've decided to wait till that comes out to make a decision), as there isn't a phone out at the moment, that comes out in the UK that I would like to buy to replace my Nexus 5.