If you're struggling with threat then you likely need to fix your rotation. SS/BT > revenge >SA >HS(when you have rage to spare). You also need to get hit capped which is 6% at 305 weapon skill or 9% at 300. You have mask of the unforgiven and should be using it to tank with until you're hit capped. You can also get lionheart helm which is also a very nice for threat.
Your talents are bad. If you want to cheese stuns then pop a FAP potion on the trash/bosses where it's relevant. here is what deep prot should look like all of the points in imp revenge are flexible.
You can drop most of your defense gear for dps gear as well. It's kinda of pointless to run with full defense gear while having a shield on 24/7. You get more than enough mitigation from shield block alone.