Yes, bonj, that's pretty much it. Shape and position of the levers is a bit different, so the best plan is to try both and decide which you prefer. I think Campag has a thumb lever to go one way (a bit like Sora).
And yes, you need a Flightdeck computer to talk to flightdeck levers. They can work out your cadence without a cadence sensor - they know how fast you're going, and what gear you're in, and you have to tell them what cassette you've got. Ergobrain, OTOH, has a cadence sensor, and also knows what gear you're in, so can then work out what cassette you've got. In case you didn't know, I assume.