for me the first play through of ds wasn't about choosing a style I wanted to play as much as just using whatever weapon I picked up which seemed the most effective since the game was so challenging, so constantly changing gear/weapons to beat certain bosses. that was part of what I liked about the game so much, it didn't give me choice of using what I though looked nice.
on 2nd playthrough; when I knew how to play and knew where to get best weapons, how the upgrade system works well the game isn't as challenging or interesting. I can just use same weapon/gear I got early on for rest of the game.
for ds2 I might go deprived, never look at a wiki and just use whatever I pick up, spec my character towards whatever weapon I find which seems strong.
obviously if you played demon souls first then dark souls isn't going to be as new or challenging, so your opinion will be its worse. but honestly demon souls sounds no way as good to me, I love dark souls map design so much, not just because its open but the way its layered, compact and you memorise your way around without map. having "levels" sounds pretty lame, plus I don't own a playstation ;)