Projection comparisons
How to compare the projection of light perfumes
For light perfumes, first distinguish airy scent texture from low projection. A delicate-smelling fragrance can still be noticeable, so compare actual presence rather than treating the adjective light as a measured specification.
A HUME Fragrance buying guide

Define the label in each listing
Light may describe freshness, a quieter style or another interpretation of a name. Read the actual product and format before comparing.
Choose a relevant setting
Use appropriate shared-space rules and a consistent type of observation. A close-range brief differs from wanting a noticeable trail at an event.
Evaluate comfort as well
The goal is the presence you enjoy and can use considerately. A quieter later phase can be a good fit rather than a lower score.
Try this before you buy
Write whether you mean airy texture or quiet presence before selecting candidates for a projection trial.