Not aware that HE does anymore than read the news
He does a lot more than that.
Edwards is the lead presenter for the News at Ten. He presents it four days a week whilst Bruce presents it on Fridays. She is one of the presenters who stands in when Edwards is not available and is also a relief presenter for the Six O'clock News. Since Edwards became the main presenter News at Ten has become the most watched news programme in the UK.
Edwards also presents News at Five on the BBC News channel and presents state and international events (e.g. the Festival of Remembrance, State Opening of Parliament and Trooping of the Colour). He was also one of the lead presenters for the EU Referendum which I think is in the period covered by these figures.
Given how much Edwards does and the relative status of the shows in which they are involved, it is not obvious that the comparison between Edwards and Bruce shows a blatant gender pay gap. It may show that there are more opportunities for male presenters but even that is not clear. It may be that Fiona Bruce doesn't want additional work.