mate you can't go making those sorts of assumptions like that with out having a real solid long look at the bike and then further stripping it back and having a real in depth look.yes a pitpro does appear to be similar from a very quick glance but the devil is in the detail on the x7r ,they do come from the same factory as pitpro though mso bikes a manufactured to a higher quality than the pit pro's ,those parts you listed are very generic of course there going to be running some of the same parts as the come from the same factory ,the price difference is fair when compared to a higher grade bike.
haha yeh there still got those cheap chinease bolts everywhere to lol