The real truth is that, outside of crit on Scholar and Bard for procing's sake, the inapplicability of SpellSpeed for Summoner dots, and maybe certain skill-speed minimums, that secondaries hardly matter at all compared to primary stat gain.

And, when you compare them to each other, outside of minimizing accuracy to the cap, you can use pretty much whatever secondary to stack or not stack and do about the same DPS.
IMO that's not a bad thing for that to happen. Otherwise the "you don't have a det-stacked lancer? Don't want you" kind of stuff would happen.