I listened to the launch stream. They seem like nice people with good intensions. But it's probably going to take a while for them to get up to speed and evolve. So at first I think it's going to be mostly what Godot is. I think the biggest difference at start will be if they have a different strategy for merging PR's that have a hard time getting approved by the core team at Godot.
Let's see if Redot can implement Intel Arc GPU GI support faster than Godot