That is quite annoying, was expecting a different style of story as seen by those respective character life paths instead of rehashing the same core story after the intro? So by that measure i take it just the first 6 hours until the intro title appears is different between the 3 life paths with the game in the current state?
The only way you're getting 6 hours out of the unique part of each life path is if you afk for 5 hours 45 mins.
You get a unique intro and then you hit the town with jackie.
It's such a thin layer. There's voice lines occasionally and I think 1 unique quest/event for each but 99.5% of the game is generic.
I've played games which support unique factions with unique storylines all the way for great replay angle value. This is not one of them.