The front panel and arms on the PTJ are windproof but the back panel isn't. The whole of the PT Softshell is windproof. The inside of the PTJ is fluffier too. There's not that much between them, TBH, although I've only worn my PT Softshell once so far.
OK so.... how do the Pro Team and classic Soft Shells differ? Bear in mind, i'm yet to actually get my hands on either of them!