I don't know about you, but the picture it paints is one of a fairly arrogant but also actually cunning and quite scary character that isn't a full vampire but certainly does come fairly close.
And I have to ask myself, do Astarion's features appear hardened and predatory? Is he actually acting like he thinks he's the superior character and the rest of the party is there to be his followers? Is Astarion in any way a master of stealth and charismatic cunning? Would I consider him a terrible opponent? Speaking for myself, I would answer all these questions in the negative. So for me, no, he doesn't really fit.
Cazador was trying to enforce in those 200 years that Astarion wasn't superior, but some lowly underling, and reinforced that with both torture and mental whamming. How much of his current character is a trained act? Because two centuries is a very long time for behaviors and mannerism to become deeply ingrained, even if those behaviours run counter to the true nature of self. And I'd expect this true nature to reemerge only slowly, in the absence of his old master. If instead Astarion is supposed to act like the wiki description, what would be the point of his backstory?
If I create myself a halfling character, should I then run to the wiki and fit the description of "Because of their love for home and family, halflings made loyal and courageous allies, willing to put their own lives at risk for the sake of others"? Because oops, my evil halfling warlock was quite inspired by Montaron, and neither fits the wiki.
