Please look at my Current gear my Body piece currently has 43 Skill Speed for example. I was testing Skill Speed. HQ darksteel melds are my primary means of testing WAR capabilities, because with melds it can fall outside of the typical, boiler plate tanking gear provided at Revenant's Toll.
As for my results: While Skill Speed is important I think that Crit Rate will be more effective on WAR in the long run. I tested Accuracy on WAR as well with a Acc +43 build. (Fortunately I haven't had nearly as many issues with gil as some others.

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If you have HQ Darksteel it allows you to experiement with many different builds. The same can be said of Rose Gold Accessories and trying out different accessories using easily obtainable Philo Tokens.
Another reason why I feel that raising Crit rate is important: Currently with my stats I should be maxing out at 10 or 11% Crit rate according to the Dancing Mad Calculator. But after conducting a number of tests on Ifrit and Garuda (the most easily available content, sadly Titan Parties rarely last long enough to test) I'm setting at a low of 17% to 20% crit rate over all.
Now, I'm not into it as much as some other folks might be, as much to go out and dig and look at WHY this is happening. But if a WAR crits 20% on a 10% build then I would hope that, if things scale linearly as they often do, then WAR will crit 40% on a 20% build.