In terms of variety and overall writing TiTs is better. There is a lot more to explore too.
But ironically in terms of freedom with other shit, BDCC is better.
Right from the get go, almost everything is customizable, fetishes, the spawn rate of certain species with certain sex and gender.
Hell, even Rahi (the dev, not their fur fag self insert OC that you can actually marry or turn into your own cum socket) left a tutorial on how to do modding for the game, a datapack system so you can make custom scenes and characters to share them, and actively encourages people to mod the game, and sometimes even add some to the actual base game if they are that good and stable. I can theorically make whatever i want within the limitations of the games engine. And somehow all of this shit its stable enough that older mods still work with the newer versions of the game. Rahi even understands that some of the people that play this game are not furfags, so the game lets me turn the spawn rate of every other species to 0 and keep humans to 300%, and entirely make the main story optional.
My advise, give both a go.