Well, you can say the width is the "same" all you want between a PW versus a Wrangler or Bronco, but there is a significant difference between them when on a tight trail. And it just not the length. I own a PW and have friends or family with both a newer 4 door Wrangler and newer 2 door Bronco and they feel WAY different when driving them on the trail when talking about width (and rubbing body panels on trees and such). On paper the track width of a Wrangler JL is about 6" narrower than a PW, but the biggest difference is how far out the sheetmetal sits. On a PW, again on paper, the overall width minus mirrors is over 79" with the widest part basically being the center of the body all the way from the front to rear bumpers....so a lot of sheetmetal to worry about. On the Jeep JL the overwall width is listed as 74", but 6-7" of that are the plastic fender flares that are just over the tires. So basically you only have around 68" width of sheetmetal to worry about, which is 10" less width than a PW. That is a big difference on the trails. Another factor is simply how far out the wheels sit from the sheetmetal. On a PW if the tires rub the tree, rock, or dirt bank there is a good chance the sheetmetal will also. On the other hand on a Jeep if you rub the wheels on something the body is further away.
My experience isn't just with the PW, but I have wheeled' a fullsize K5 Blazer for years when almost all of my buddies had smaller Jeeps, Toyotas, etc... that have similar overall width differences as a PW versus the newer Jeeps.