Thankyou. We got there on the end. After hearing that I still think he's not saying that they have been told to favour the big sides. He doesn't say that, he just name drops and says that they are advised not to caution those players for swearing, and the result is nobody gets cautioned for swearing. It might be the same thing, or the same result, but it's a long way off from him admitting to favouring the popular teams.
I do think that refs have let top players off a lot, and maybe there is a subconscious element to this but it's still far away from proof.