User blog comment:Emptylord/Season 3 - PBE Patch Notes/@comment-109.186.147.168-20121116052305/@comment-132.170.40.227-20121116053134

AD and LS go hand in hand, a some LS with no AD dose not provide a lot of sustain, they are lowering LS values a bit but pairing them with AD so the effect is more consistant.

Unless you are talking about the doran's items, recovers may mean restore, so its unaffected by ignite/wounds (like red elix) or they are making it percent base and dont want it to go crazy with LS