You want the
Shaft of Glacial Ice, your comparison failed to mention that the agility versions also have straight AP on them. Meaning that the FAP on
Warmace - 3176
Oxheart - 2974
Shaft - 3177
See
this comparison for reference.
So the real discussion is weather 40 Stamina & 94 Arp
or 35 Stam & 76 Expertise is worth dropping a wooping 136 Agility1? Not to mention the 88 hit rating (as you should already notice the severe lack of it on Ilvl 251 and above.
40 Stam, 94 Arp & 1 extra socket vs 136 Agility & 88 Hit = Debatable but the Shaft IMO pulls ahead slightly
35 Stam & 74 Expertise vs 136 Agility, 203 AP & 88 Hit = Shaft wins
The only downside to the shaft is the socket colour is horrible but the bonus isn't worth it anyway so 30 Stam will suffice. I
suppose the Warmace has a certain place in certain fights but i wouldn't dare roll on it unless it was about to get DE'd