Agree and Disagree.
You conceded a whooping 6 goals less than we did over the season, we actually kept more clean sheets than Arsenal last year, Pepe himself had 14 and I think Jones was involved in a shut our or two.
Our issue last year was when we conceded in a game, it was more often than not in 2s and 3s where Arsenal rarely conceded more than one goal.
With regards to the following:
Arsenal Defenders:
Jenkinson (Flamini)
Koscielny (Vermaelen)
Mertesacker (Sagna)
Gibbs (Monreal)
Sound.
Liverpool's defence:
Johnson (Kelly, Wisdom)
Toure (Skrtel, Coates)
Agger (Sakho, Illori)
Enrique (Cissokho)
Glen Johnson > Jenkinson, both going forward and defensively!
Kocielny = Toure, however Sakho is being bought in to replace him, but I won't grade him, he's not even kicked a ball in anger yet!
Mertesacker < Agger, both aren't blessed with speed but whilst Mertesacker maybe better in the air, Agger is better all round ball playing Defender.
Gibbs = Enrique, Gibbs much better going forward, Enrique a better defender.
If anything we've got a bit more depth to our defence and if we remain disciplined should concede fewer goals this year.
Also, wouldn't count Coates, if he wasn't injured he'd have left the club.