I often don't ever draw Tarbosaurus, but here is at least my understanding and take on Tarbosaurus, using Tyrannosaurus rex as some inspiration, especially for the neck display and keratin horns.
For this, I wanted to keep Tarbosaurus similar to Tyrannosaurus in general patterns and speculative anatomy, so I decided to bring in the previous core features, although slightly modified, such as more exaggerated snout keratin along with a few major coloration change. Points from the Tyrannosaurus remains the same for similar reasons, although I don't have a great understanding of Tarbosaurus so some points (such as combat) may be invalid, though I'm unsure.
Feel free to check out the Tyrannosaurus rex post for the information of my takes- https://www.artstation.com/artwork/AqWe5e