Will the wording of the issue on Paper 2 always be exactly the same as the prescribed topic in the syllabus?

No, the issue on Paper 2 could go across a Key Question or it could be an investigation into one of the Focus Points (and accompanying Specified Content) listed under the Key Question in the syllabus.

For example, if the prescribed topic is ‘Who was to blame for the Cold War’ the issue could be related to the breakdown of the US-Soviet alliance, the USSR gaining control in Eastern Europe by 1948, the US reaction to Soviet expansionism, the Berlin Blockade or US/USSR blame for starting the Cold War.   If a paper is on one of these Focus Points, the issue used will not necessarily be identical to the way the Focus Point is worded in the syllabus, but it will be related to it.