But you're not looking at the numbers in the right way - forget about what the concerts end up grossing for one moment.
Firstly, the promoter assumes all of the risk.
There are two ways of paying the live act: a "guarantee" (i.e. the promoter fee, paid before the concert is held) or a cut of the live gate (which would likely be used for smaller scale acts, where there is an element of risk).
The primary source of income for most artists when it comes to live performance is their guaranteed promoter fee, which they receive even prior to tickets going on sale - the bigger live act you are, the higher fee you command. The biggest acts probably then participate in some sort of profit sharing scheme (once all fees are covered, including the promoter cut - you share a % of what's left).
Typical costs might include:
* The artist "guarantee" or promoter fee.
* The cut that the promoter takes.
* Booking the venue (e.g. it is thought that for a large scale concert, the O2 costs £80,000 to rent).
* Local performance taxes (these can be exorbitant).
* Insurance costs.
* The cost of marketing and advertising the event.
* The cost of the equipment - are you renting the equipment and travelling with it or renting it locally, dependent on the locality? Expensive.
* The cost of looking after the act, notoriously known as "the rider" (i.e. Celine likes to have a special type of water as it hydrates her vocal chords, she likes a particular type of flower and specially made food that's shipped in).
* The cost of putting the act up in local accommodation.
* Trivial costs - such as ticket printing, arena staffing, local security etc.
And there's so much more which I haven't thought about.
Really, this was Ed's second large scale global tour - he wasn't a proven live act, no matter how successful his recorded music was so the likelihood is that this tour sets him up to command massive fees next time - I wouldn't be surprised if he sees less than 20% of the touring gross when all is said and done.
A separate point - most companies in the UK report their accounts from April to March (so those accounts likely won't include reported income for the last 6 months).