Jox
The difference bewteen the Decision Maker(DWP) and the tribunal, is that the DM is a biased party. As Pete said in his post earlier, the DM, whilst they should review all of the information is entititled to place more emphasis on certain evidence than other.
The Tribunal has no bias and therefore assesses all evidence on its merits. So if they are presented with two medical reports, one 18 months older than the other, they should choose the latter because it is more relevant.
Hope this explains it better.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems