The 757 probably has superior I-P conversion than your PJ. Ask yourself how you rate the deinterlacing of the PJ compared to the 757 with NTSC material. If you prefer one over the other then you will get similar results with PAL. If you prefer the 757's I-P conversion then get it PAL prog updated.
after looking at that i think ill pay someone to do it or not bother,thanks for your help but it still looked like typing out a telephone book.and even then im not sure its for pro scan and not multi region.