Could have T-rex got much bigger than we all know?

We all know sue the t-rex but check this out, sue died when it was 28 years old and it got 42 feet long, now lets look at UCMP 118742... in case if you don't know what is *UCMP 118742* its an another Tyrannosaurus Rex Skeleton, UCMP 118742 died out when it was 16 years old and got already as big as sue, and we all also know that t-rex never stop growing, so if UCMP 118742 lived as long as sue, i would say it could have reached 15 - 16m in length. what are your thoughts about this? and do you really believe that this could have happen? ------------------------------------------------------------------- This is not my theory, it's a guy called Illiterate Scholar on youtube. his channel : [url]http://www.youtube.com/user/illiteratedino?feature=watch[/url] Illiterate Scholar video about T-Rex's Growth , Giganotosaurus & Spinosaurus Sizes: [url]http://www.youtube.com/watch?v=UvoBhnUBeME[/url]