TY Milo.
A most interesting website.
As for BoB, I think the specification is generally "LW versus fighter command" an offensive of the behalf of the LW to subdue fighter command, making British airspace completely safe for LW bombers and transport. The Phases were basically 4, first attacks on shipping in the strait, then attacks on radar sites, then attacks of British airfields among with other targets, and then it switched on to the Blitz.
Hitler's command was this:
"The English air force must be eliminated to such an extent that it will be uncapable of putting up any substancial opposition to the invading troops"
A rather clear objective, and if you read Deighton you will realize that the LW was actually rather good in the planning and altered its plans many times over the battle.
So, wins and losses relate to this.
Here are the numbers I have.
LW Losses:
To RAF fighters 1197
without credit 37
AA 100
unknown 102
Failiures 57
take off 28
collisions 22
lost bearings 8
out of fuel 11
weather 6
ballon cables 3
own AA 3
searchlight 1
total 1.609
Shot down by Spitfires 529
there off 109's 282
Shot by Hurricanes 656
there off 109's 222
110's killed by Hurrys 128
by Spits 80
Source: Aeroplane, - John Alcorn
Period July 1. to October 31
And it looks like a good job BTW