Carcharodontosaurus saharicus VS Spinosaurus aegyptiacus

I didn't use any of those three other theropods as basis for Spinosaurus. I used the a type 3 lever mathematical equation to determine the bite force. This was based on things such as Spino's skull size, the distance that the rear of the skull was to the tooth I was studying, the distance between the pivot and the jaw muscles, the mass of the jaw muscles, and so on, not related theropods at all. I then used the same method on other theropods, looked at my results for all 4, and compared the results to the numbers published by other scientists to see if the method worked, and it did. Moreover this is a very common method of determining a rough estimate of an extinct animal's bite forces. There was a guy at SVP who used the exact same method to determine the jaw strength of ornithischians and examine what they were eating. :/

Spinosaurus was a spinosaurine (that's where the subfamily's name comes from), and it's the biggest spinosaurid known. Oxalaia is also a spinosaurine, and it comes at a close second according to current estimates. The only small spinosaurine is Irritator, but you have to remember that it's a juvenile individual.

Suchomimus is the largest baryonychinae and the next largest spinosaurid after Oxalaia, followed then by Baryonyx which is known from a juvenile specimens. After that, the rest of the spinosauridae is tiny, being at around Irritator size or smaller. If you were to then count up the number of big species (30+ft) per subfamily, it would be 2/3 for spinosaurine and 2/5 for baryonychinae. So yes, the former seems to be larger on average, abet slightly.