In reply to second question:
http://worldoflogs.com/reports/6evr5...?s=5495&e=5807
(prenerf)
The damage TAKEN by players is higher compared to the damage your group took, as illustrated with the following log
http://worldoflogs.com/reports/n798f...?s=2688&e=2999
Of course soul link will have a lower damage on yours (which is a good thing) because you received less damage. Seeing the log came from yesterday its safe to say that the 5% damage nerf on the bosses had a huge impact as well
Regarding to #3, if you see it has # uptime it means either (in case of positive buffs) that its up all the time, or in case of negative that it didnt proc much (seeing holy radiance I wouldnt be surprised the damage got absorbed by quite alot