My opinion on the Giant dinosaurs

I'm sharing my opinions about the size of Giga Spino and Rex amd xomparing them, in my opinion of course, so you don't have to agree with me. For me, size is in this formula, length+weight+hieght=size. I really don't think T. rex could get over 45 feet long. And that seems a but long for me, and so at 9 tons and 16-17 feet tall, its pretty big. Now take Spino, 60 feet long, 7-8 tons and 25 feet tall at the sail, 18 at the hips, also pretty big with the sail, in my mind, larger than T. rex. Without the sail, only at T. rex size. A 1-2 ton difference on a creature that large just doesn't make it as big, if we are sizing it down to T. rex, it is smaller. And Giganotosaurus, who is 45-50 feet long, around 8-9 tons, and up to 18-20 feet tall, is, in proportion smaller than T. rex, but seems to me larger, being as heavy in its size, and longer and taller. This is just my opinion and thoughts. Size: Spino, T. rex, Giga. But they are all very close.