200kg is doable natural (i assume) at least if you're gifted.
A friend of mine benched 155kg at the age of 21 and he's rather short being 175cm tall, although he has rather short arms, at 170cm of reach.
(The average ratio for a male is 1:1)
His frame isn't naturally big either, his joints are pretty small, thus i'm fairly certain that someone who's got the right frame (being a big, stocky guy, ideally with rather short arms) and enough lifting and training experience can bench 200kg.
EDIT: Here are pictures of the friend i've been talking about:
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