The Wardens are too new...the expert math nerd players haven't had time to optimize them, test dps, re-optimize, etc. Plus we might expect some significant balancing changes to Wardens if they over or under perform...whichever is better today, this might not be the case by the end of summer.

My guess based on the builds we are seeing pop up is that stam Wardens will have slightly more dps and better resource management than stamplars, with less sustain. And because of jabs, I think we might find the two to beat each other depending on single target or aoe. (And remember, stamplar end game aoe is going to change too because of massive changes to caltrops).

Caltrops is getting a 50% reduction in cost and 75% increase in damage. It will not last as long, and the radius will be slightly smaller. This is going to be a major buff to all stam builds...it offers them a significant aoe skill for mobs. I haven't tested it yet to see dps output, but it's cropping up as a skill in all of the expert's pve builds.

Resource management

Be advised that I'm making an educated guess, based on my experience and the builds I'm seeing pop up. But this patch is MASSIVE changes. I am not 100% certain about how the various classes will settle out. And I'm suspecting that there will be fine tuning in patches...so even if we know in a week how classes perform, this might change next update if someone is over or under performing.

Wardens have the netch ability and a passive called natures gift, which restores stam/mag upon a heal. Templars have repentance. I'm also looking at the Warden go-to abilities versus stamplars. Wardens get a little better magic dumps, and stamplars have always been challenging with resource management. Stamplars are just so easy to spam away your whole pool. So that's where I'm guessing Wardens edge slightly ahead, but I could be wrong.

Sustain

I'm betting Stamplars perform slightly better based on the sheer power of repentence. It's changing, but I think for self sustain it's still going to be the best ability in the game. Wardens have heals, but a lot are support heals. There is nothing that leads me to believe they're going to have poor sustain, I'm just not seeing anything that quite compares with the stamplar's list of choices. Lotus Blossom is the heal I'm seeing pop up on stamden builds. It sounds good...but a little less functional than repent.