I honestly have no doubt some people are capable tanking even superbosses with Sunder. But look, even before 1.2 I could barely kill Ravager by running away like a little bitch with a build I would consider at least somewhat tanky (Forcewave Warlord; can’t give a link though, GT site seems to be overloaded at the moment). This char would die in about 4 hits. Now imagine if I managed to get Sundered - this would leave me no room for any mistake, and I thought I’m playing an ARPG, not Minesweeper. Most of my characters were also getting killed in SR65 from time to time, simply because I can’t dodge everything in fusterclucks that can happen in SR (those damaging crystals bunched together, ugh).
Also, just to be clear, I was already avoiding some of the dangerous telegraphed attacks (Alex’s meteor, Grava’s Nullify, Benny’s “pincer” and minefield, to name a few) prior 1.2, but like I said, can’t dodge everything everytime…
Now regarding building for Sunder. With almost every major patch I had to adjust at least a few of my builds: sometimes it was just tossing around some augments or components; sometimes I had to remake it completely, if certain item was redesigned for example; and sometimes I had to scrap the build entirely and build something new. Regardless, it was costing me in-game resources, which in turn means real life time spent farming said resources… you get the point.
As of now, I have 39 characters. I don’t have any plans spending days, weeks, or maybe months remaking all of them so that they just could tolerate being Sundered. Not to mention you can’t possibly do that for every class and playstyle (how would you make aether Stun Jacks Defiler super tanky? You can’t!).
And another thing people forget: in 1.2, Sunder isn’t the only “hurdle”, life leech was also nerfed. Sure, existing sources of health regen were buffed to somewhat mitigate this, but zero new sources were added. And I sure as hell love me some health regen builds, especially on casters. But how would you build, for example, an Oppressor for health regen? This class literally has no synergy with it. And there’s a reason why Twin Fangs was (is?) meta.
A’ight I’m done, I think. That was a mouthful…