Titan is a gear check in that some people are so bad at it that they are attempting to cover up lack of skill by overgearing the encounter.

Hilariously, this means that groups which REQUIRE DL+ gear, are more likely to fail in my experience, because they are made of people who rather than handle the mechanics properly, are trying to overgear the mechanics, which... doesn't really work, for Titan. You can outgear the Tumults, sure, but you can't outgear the bombs and the pools, at least not with just DL gear.