Is the demo a poor representation of the full game?

Here I'll show you this:

"I will compare BD gameplay to Diablo2, because D2 is a simplistic fun game everybody knows and hardcore RPers so despise.

*character creation + lvling:

diablo2: 5 classes (original) each with 3 class specific skill trees and rougly 30 skills for each class.
At lvl-up, points go into ability scores and stats.

BD demo: 3 classes each with 1 tree and 3 skills per tree on average, but you can make custom hybrids of those 3 classes.
At lvl-up, you can put points in skills and you can upgrade magical and weapon skills. You can also put points in the ability scores on the inventory screen(! ?) but you get no message to do so. 10 skills total.

BD full version: promises 300 skills?

*Play style:

diablo2: you talk to people to get quests to either kill something or fetch something. You then go on a killing spree with melee or ranged weapons (including magical attacks), depending on your build.
Fighting consists of clicking at your enemies and holding the mouse button.
No puzzles, no dialogue.

BD demo: your companion talks to you at the start of the game and then you get a quest to escape your prison. Then you do a lot of walking and kill some guards in between.
You can use some rare melee weapons you find or a bow and mages can cast one kind of spell after lvl-up, choice between air/water/fire/eath damage which makes no difference in the demo.
Fighting consists of clicking on your enemy once and waiting for combat to resolve, or clicking repeatedly if you want to casts multiple spells at them.
1 very simple puzzle involving 5 levers with the solution written down in the same room.
Dialogue consists of guards shouting things at you before initiating combat and one skull who gives you a quest to kill some torturer(=a guard).


*companions:

Diablo2: you cannot control your summons or hirelings but you can have several.

BD demo: one death knight companion and you have full control over him.

Conclusion:

BD plays like diablo2, but with little action, fewer options, fewer choices, less tactics, but with a hint at RPing through a few rare dialogue sequences you cannot influence at all.
The only thing BD does better than diablo is the GFX: direct3d compared to diablo's 640x480 2D."

What do you guys think?