Armstrong goes after and gets wins over Burley, Williams, Cocoa Kid, a young(ish) Robinson, and rightfully gets the decision in Garcia II for the Middleweight title. In the running as is, so with all that added to his ledger, surely there'd be no doubt. Edit: So the last 2 don't fit the rules. Hmmm...just add two other quality wins, Cochrane or someone like him, and it should still be good enough.
If Greb and beats or draws with: Jack Dempsey Henry Willis Sam Langford I think this would put him over the top of Robinson.