I would like to point out that levels in dnd represent an exponentially rarer population. The vast majority of the population in the world wouldn't even be past level 1. A well trained experienced soldier would probably be only a few levels in. Getting to level 10 would denote many extremely difficult incounters and possibly decades of experience accumulation. The point is that it is designed as an RPG with a DM to control the flow, set limits, and direct. Video games do not have that luxury, well except neverwinter nights (game with a good direction). The reason BG wizards were so strong was the fact that there were no reagents, loss of experience for even casting a spell (thinking twice about casting those high level spells now aren't we), smart AI or a Human brain to say, "Hey, you can't just take 10 8 hour naps in a castle of armed men trying to find and kill you."