Huaxiaosaurus

To kill some time while we wait for my next fight (about 40% done with wedding planning, but I'm also booking and working on something for the honeymoon. Can't post the surprise here in case my future wife reads this for some reason) I decided to post about my dinosaur of interest at the moment: Huaxiaosaurus. It measures 17 meters at least, though some mounts indicate it reached 19 or even 22 meters! An animal that enormous would weigh well over 25 tonnes. I and many others theorize it represents the adult form of Shantungosaurus. They both hail from Asia, living at the same time as Tarbosaurus, Zhuchengtyrannus, Protoceratops, Velociraptor, Oviraptor, Deinocheirus, Therizinosaurus, Gigantoraptor and many other oddities. Surely an animal of such a hulking size would have no predators, unless Tarbosaurus hunted in packs or the "dromaeosaur Deinocheirus" theory is true. This giant dwarfs even the largest tyrannosaur, as seen by this [img]http://th02.deviantart.net/fs71/PRE/i/2011/331/5/b/a_tyrannosaur__s_worst_nightmare_by_hodarinundu-d4hjd3d.jpg[/img] a drawing by [url=http://hodarinundu.deviantart.com/]Hodarinundu[/url] on deviantART. What are your thoughts on Huaxiaosaurus? Is it Shantungosaurus? Could it beat Tyrannosaurus? Spinosaurus? Giganotosaurus? Could it survive in the world of today? If so, where?