Assuming your using Senji/Perdu with basic 15% haste (Turban; Fuma; Dusk; Swift/koga) w/ suppa, af body and af2 legs your looking at a delay of 195.75(ish lots of extra numbers) and about 4.4 tp per hit.
With same set up; using Aurore in place of koga, you get 206.21 delay and 4.5 tp per hit.
Add in haste and senj/perdu with koga is ~162 delay. Aurore would be ~169.5. Add in marches you get 119 vs 122.5.
Think about it this way:
The more outside haste you have, the smaller the gap between koga/aurore (and the more likely you'll need aurore's accuracy).
The reverse also holds true, that if you don't have any outside haste, you'll likely be soloing and not need the accuracy on aurore.
The difference will be pretty minimal either way anytime you can fully benefit from the accuracy. It's just a watered down comparison with haidate - the small difference in delay is often negated by the dex/acc.
80 Pup Brd, 75 War Rdm Drg Sam Mnk Pld Bst Thf Whm Nin Smn Blm Rng, 72 Drk, 63 Cor, 50 Blu, 40 Dnc Sch