I think he means you probably won't have a weight equalizing hitch. I've had two pop-ups and a big travel trailer, and only the TT had a weight equalizing hitch. These are big, relatively complicated affairs with heavy metal bars connected with chains to distribute the tongue weight of the trailer to the tow vehicle better. Bottom line, don't worry, your pop-up won't have them.
For that matter, I didn't have a sway control on either pop-up either. I don't think they're necessary for a relatively low-profile trailer like a pop-up. I would recommend trailer brakes (they're mandatory in some states) unless you have a very large, heavy tow vehicle like a full size pick-up.
New generation brake controllers are cheap, easy to install and many hook up with a simple plug-and-play wire harness. Your dealer will take care of all that (for a price
, of course).
Don't worry about a ball until you get to the point of buying a trailer.