Of course it all depends on the individual child - not just their readiness, but other ways they may fall on the developmental scale. Just remember, there is vast developmental variance in those early years, and falling at one end of the scale or another is not indicative of eventual ability. If you have the freedom to choose, I would give it a hard think about what is best for your child.
My oldest two of four started school in the US, where they start later, and push less in the early years. I, personally, find it all way to early here, and believe it causes may children to suffer, learn to dislike school, feel badly about themselves, and lose confidence.
I recently came across this article which mirrors what I have been thinking all along:
http://www.theguardian.com/education/20 ... chael-gove
Only you know what is best for your child and where their temperament and abilities lie. Don't feel pressured by others or the norm when you make your decision. Good luck!