[Titanium Impact Band] Any worth it (PvP)?

[Thewtfman]

[Titanium Impact Band] - http://www.wowhead.com/?item=42642

Atm I have [Band of Frosted Thorns] - http://www.wowhead.com/?item=37151

My Stats (BattleStance):
AP: 2856
Armor Pen: 0
Crit: 32.80

So may question is, is [Titanium Impact Band] any worth it? Cant see it gives me so much, it gives me Armor Pen, but i lose crit, str and stamina. What do you say?

[Niisama]

Get the ring and throw a 16 Str gem in it.