PES3 headers are far away from being realistic IMO, the same with WE7, which are even worser. PES3 headers are also to easy to score. WE7:I both headers and crosses are much harder, which means that they look great and realistic, but it also means that it´s easier to hit the goal than in WE7. Nevertheless IMO it´s not as easy to score with a header as in PES3.