Theoretically would even a diamond player be able to carry 4 hard feeders?

How about a master? Challenger? I need to know how many games I should have been able to win. Since the introductions of wardens, even links that name or shame are off limits so I ask everyone to go here:

http://matchhistory.na.leagueoflegends.com/en/

and look at my most recent game by searching Hallbuster.

Basically, I just want to know if it could be won, no matter how fed my opponents were.