Public Beta with Developer Profile?

For what I know, public beta's are usually the same builds as the Developper Beta's. The only difference is the PB release 2 weeks later for the first beta on major iOS release and then 1-3 days later for the upcoming beta's.

 

Beta 2 and Public beta were the same for some phones and different for others because there was a nasty bug with the restore...
As I believe beta 3 and public beta 2 will be the same, the latest being released today or tomorrow

 

I have no idea why but when I first signed up for PB back in the day when they first allowed it, I've always had the notification of beta release at the same time as the developers for IOS and OSX. No idea how or why but it seems to be a little oddity for some PB users.

 

Yes they were... Both were the same exact build number.
It was either 15A5304j or 15A5304i depending on the device.

--- Post Merged, Jul 11, 2017 ---

Thats probably because you were installing later betas. For the first few betas, DP get it 1-2 days before PB gets it, just incase its not stable or a massive bug. This was perfectly illustrated with beta 2. As the beta cycle matures near August, the the DP and PB come in sync with same day releases.