Id say it has more to do with them attacking as soon as u pull+Burst. I have only had a few issue's myself tanking, especially when trying to position a boss at the start. It's been posted many times that enmity is a team effort, if a brd wants to pull hate at the very start good chance he/she can. I even push this when I play brd here and there. Here's a example playing around with a parser, both my smn and brd are geared the same DL/Relic. My smn has higher dps overtime not counting bane or shadow flare. While my brd is lower overall dps it's short spike dps can reach over 330dps. Blm I haven't really had a issue with/have it lv'ed I could only assume it's lucky/early thundercloud/firestarter procs. If it's a aoe hate issue and there doing so constantly you just adjust to aoe tanking vs single target. Downside to this is War has limited resources(TP/MP) while Pld can just flash and restore there own MP.