Obvious difference here is that Groves was not up against a huge public favourite in Degale. Also in that fight Groves didn't really have any option to go along with it if he wanted the shot. Groves is a bigger peice of the pie in this re-match so is able to make more demands. Like I say I think it is over the top but he's probably entitled to be a bit over the top as he was unfairly treated in the first fight.
It's a huge fight, the ref and judges play a huge part. Everything neutral makes everyone happy. Although not sure why Fitch was chosen, would have preferred a big name, with a decent history of big fights who knows whats at stake.