Cannon doesn't mean anything when it comes to entertainment, DC, Marvel, Star Wars, Star Trek, etc... They've change it lots of times from their comics to their books to their animated movies to the big screen movies. To ***** and moan over age discrepancy is a bit over the top IMO.
They modeled Shaak Ti after the Video game, so their was precedent for the way they depict her in the statue. It's not like they made it up from thin air. Also from what I've read her age is never given so all your "calculating" is based on pure speculation and assumptions. Far as you know the person who created her made her a Jedi Master at the age of 20.
Fair enough. But Star Wars has always been different from those other franchises in that a consistent cannon has always been kept. And yes I'm speculating on Shaak Ti's age but lets be honest she is pretty old. There was precedent for the way they did her statue, I just did not like said precedent is all. They did do a great job with the statue.