A wheel built with Ti spokes will tend to be more flexible, than if built with SS spokes. How much depends on the relative gauges.
Wheel flex isn't a totally bad thing. It improves handling on rough pavements, though is worsens handling in tight corners, and in hard sprints.
Don't worry about some artificial measurement of flex, but about how the wheels perform in service. If they're rigid enough not to cause you any handling problems, ride them and consider whether to go the same or a different route when it comes time for a rebuild.
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