How DeliverySheet relates to the tools around it

One model behind every page here: most tools start working after a commitment exists — tracking it, scheduling it, publishing it. DeliverySheet owns the layer before that: whether a request is understood, owned, sized and unblocked enough to promise at all. Each comparison states plainly what the other tool does better.

Not sure any comparison fits? Start from the problem instead: most missed delivery dates are decided at commitment time, before any tracker sees the work.