I used Shield for a long time, it's quite good. The Gale i dont like the push away effect, always mess up with other AoE skills! Only thing cool is its speed boost effect which useful in farming/avoid boss... Is it worth to replace the shield in PvE?

Arcane Shield: 30% (+15% with upgrade) dam reduction in 10s, cooldown 30s

Gale Force: 50% Armor in 4s, cooldown 5.5s

Which take more dam? Honestly i'm terrible at math