I would bet that those who ran were also of the Muslim faith, it being a inner city bus.
My other thought would the 30 child rapiist terror lovers on the bus that fled any of them have a cellphone to call police if they weren't too flamingly gay to actually help?
I don't know what the buses in London are like. In Birmingham (UK) 3/4 of the bus-riders on the lower deck on the 88 route are women and old people: I wouldn't expect them to go all mob-handed on a gang of muggers. I would guess the Belgian bus was full of women and old people too
Nice work with the golf-club BTW. As one secretly-armed Briton to another, I hope you used a "throw-down" weapon, like a cheap putter, rather than an expensive Callaway Driver :0)