Ive had a Gen 2 SCAB and a 2023 F150 Raptor. I wont talk to the performance because most people have laid that out well in the thread. I'll talk interiors though. I think they Gen 2 was more comfortable on the inside. I don't mean comfort in terms of the seat/ride/whatever. I mean it more of a way that the interior design was more cozy and "warm" feeling. The Gen 3 is laid out better and much better to look at but damn its cavernous and kinda "cold" from a design perspective.
Outside of that, keep in mind that 2021-2023 Gen 3's are COVID cars. My 2023 had all kinds of ghosts in the system, quality issues, and craftsmanship issues. Its one of the main reasons I got rid of it for a Bronco Raptor within 4 months of owning it. I was worried about the gremlins that would pop up after warranty. If you go Gen 3, go with the 2024.
For what its worth, my 2018 SCAB was the only truck my fiancé talks about missing. She thinks everything else I drove, including a 2023 F150 Raptor and 2023 Braptor, was stupid and too big lol.