Ok here is a side by side!
Clearly the 4n is quite a bit larger and the stiffness of the flower causes it to be held and shaped differently.
The coerulea is a bit cupped but im no judge, and i think the form is elegant and color contrast is really beautiful.
As far as i can tell they smell exactly the same but the 4n seems a bit stronger. Perhaps its the genome but it may just be because there are more flowers. Either way, you catch wiffs of these plants anywhere in the house.
These plants are maturing quickly so next year we may start to see the tigrina style clusters of flowers. I wont be too suprised if the 4n has 10 flowers next year and that will be quite a spectacle!