Because they are cheaper to feed... A 20 kg pitbull doesn't eat like a 70 kg tosa...

You can have 3 times more dogs at the same times and so you can bet 3 times than a Tosa kennel...

These are only simple argouments...

Then a pitbull show is much longer... look at 16 kg match...

Different at 30 kg match... They work for less time and give themselfes more damages...

I want only know the truth...