I think you've got a few massive variables here;
1. Experience - the more experienced you have, the more money a company will pay you
2. Company - I doubt a budget airline will pay you as much as American Airlines!
3. Location - Different country, different GDP, different salary for everyone!
4. Route - Trans-Atlantic pilots will get paid more than domestic I would imagine!
Google throws up some interesting results for "Airline pilot average salary" and "Cargo pilot average salary"
Fedex Cargo Pilot - $180k ... Regular pilot $145k
I think you could look into the rest!
Good question though!