As far as I can see, no information is tracked in Recount about the absorption shields coming from Warrior and Paladin tier 13 2-set bonus. Both my friend (Warrior) and I have used this 2-set bonus quite a lot now, and cannot find any information about the absorbs in recount. Neither in the Absorbs tab nor in the Healing tab.
The spells involved are as follows:
Spell: Shield of Fury, http://www.wowhead.com/spell=105909
Spell: Delayed Judgement, http://www.wowhead.com/spell=105801
I hope to see this fixed in a future version. :-) I also created a ticket: http://www.wowace.com/addons/recount/tickets/621-tank-tier-13-absorb-shield-not-showing/
Thanks in advance.