Sorry but that isn't true. Trader alpha (crit as, fling and a reg hit as well as a few perks) gets me to 40% as a soldier with 24k hp and prenul+ofab back. The crit rate in addition to great AS is what makes trader alpha great on some classes, despite not having many perks.
ps. A good alpha is an offensive tool.
And so is drains, cc, blinds, stuns etc. All of which traders have. If face I'd rank trader offensive toolset amont the best in game.