Post#2 » Wed Dec 30, 2015 10:31 pm
Info in first link is wrong. There ARE per-spell coefficients in WAR, the most obvious being most AoEs (0.5) and Divine Mend (3.3*). This is of course an extension of the formula given, such that Divine Mend contribution is (Will/5) * 1.5 * 3.33333.
DoT coefficients are generally related to their duration. Effective cast time for a DoT is the GCD. Coefficient for most 15 second DoTs is 3, for 21 second DoTs it's 4 and for ones shorter than that it varies wildly, including depending on whether the DoT in question is standalone or part of another ability (Fervor, etc.)