I would say Arbeloa is the worst in Madrid's back four. I think he's still there to fulfill Spanish 'quota' in the team.
I am hesitant to say anything negative about Arbeloa in here, but he is a definition of average. Not only average, he became a dirty dirty player under Mourinho. He'd lick Jose's ass if he were to order it, it seems.
He is the worst player in the Spanish NT first team as well, if Puyol-Pique were both fit, he wouldn't play I'd imagine. Shocking technical ability, useless in attack and pretty average in defense. His defensive abilities are pushing, harassing and fouling about 90% of times.
The most hilarious thing about ManCity-Madrid match was the fact that Real Madrid players were dropping like flies, diving all over the place and faking injuries. Usually they are the ones to talk about playing like men and not falling to the ground, but guess what, they and Jose are going to change their views as long as it suits them. Absolutely pussy team with no personality. "Hard men" like Arbeloa, Ramos and Pepe are nowhere to be seen when they face more physical teams than themselves, it's only against Barca midgets they want to get physical