Hey Moira. That pic of your 2 cats fighting are exactly what I am experiencing right now. Though obviously there is a lot of squealing and noise. The Egyptian Mau is the one who instigates it all, but he doesnt make a sound at all now. He is physical, while the Bengal is vocal. Also, your pic shows the Egyptian Mau on his back. That never happens with mine. The only cat on its back is the Bengal - the Egyptian Mau is in total control, during the entire fight.
Moira, I'm actually wondering if the Egyptian Mau breed is quite dominant and is therefore making the 2 week advantage (in your case) and 4 week advantage (in my case), look more significant than it really is. If it was the Bengal who was a few weeks older, I think that the Egyptian Mau would still be the more dominant. The fact that Egyptian Maus are the fastest domestic cat in the world, would tell us that they are the most athletic, which implies that they would probably be physically superior to all domestic cats (F1 Savannahs and Bengals, accepted, due to their wild genes).
During the month I have had Reflex, I have played with him A LOT - lots of climbing, running and hunting games. As he has become a rougher, I too have been quite rough with him, which means he has learnt to play rough. On top of all this, I have made sure that Reflex is fed many times a day. This has helped him develop his muscles, with the aid of all the physical training. The new Bengal on the other hand, is EXTREMELY gentle and clearly hasn't had any rough treatment. He probably also hasn't had the climbing, running and hunting training that Reflex has had.
A few minutes ago, Reflex went nuts and chased the Bengal pretty hard, so Ive had to put Reflex in the cat carrier for 5 mins. I'm hoping that he might learn that everytime he attacks the Bengal, he ends up in the cat carrier.