I wouldn't say either Vinny or the defense have been poor this season, we have conceded the odd goal but not made masses of errors.
I would agree that neither collectively as a defense or Vinny individually as a player have the defennse been quite as solid. I think it may partly be a concentration thing as there are not the sustained periods of pressure against us except possibly first half at the swamp which we dealt witrh very well or the Bayern match when we were a little more lacklustre.
For me Joleon has looked the most solid this season though Vinny is undoubtedly the better footballer.