damn i forgot how it works, but on live 1 necro surely absorbed 50k healing.
this guide should help http://prestige-gaming.ru/5_4_gaid_po_ricaryu_smerti_nechestivost-t45689.html
he's glad etc, suggests that 1 str = 3 pvp power. and ofc str affects necro absorb
+ he got videos with necros in pvp+ pve, but not in 550 gear