Xmas Sausage: Terminator Variant

Steve it may be clearer now that a few people have posted and fossicked for info. The first route on the Buttress was Phil and Carols in the corner left of the prow. The Terminator climbs the prow and moves R to cross the overhangs seen on the R (not the ones on the left that the Castle/McDermott route tackles). Xmas Sausage appears to continue straight where the Terminator heads R and is also most likely the line Bill McLeod and Peter K Dickson climbed in winter. The exit L shown on the Palman Guide is not where The Terminator went.

I assume that this takes a direct route up when terminator breaks left on easier ground? If so, it's odd that this (presumably harder) finish gets lower grade than original. Did they feel original was overgraded?