He was definitely part of a good unit, but that unit often had Neville in the side as well, either at full back or Centre mid, and he was hardly a great player either. He was reliable, and professional, and always gave 100%, and for me they are similar. I would say Jagielka was a better athlete than Neville, and like i say, he was, at his best, very fast. But I never felt confident with either of them on the ball, either carrying it or passing.
I always thought Jags used his pace well to cover for a lack of positional sense, which is why the last gasp lunge became his trademark, and why we conceded so many deflected goals, but I don't think he was as good or as intelligent at reading the game as say, Heitinga, who somewhat unfairly in comparison, didn't have the blood and thunder style or pace of Jags, and therefore came across like he was giving less effort. But he barely ever needed to leave his feet, because he read the game so well.
Neither of them were particularly great in the air, as they were both on the smaller side for CBs and Jagielka was obviously faster, plus he had the whole "returning to Everton, die for the shirt" attitude that people love, while Heitinga often had the calm, laid back demeanour that continental players often have, that, coupled with his superior reading of the game, made it appear as though he didn't care. Personally, I would say that at their respective peaks, Heitinga was the better player. But both were lucky to have Distin as a partner who was fantastic.
I should probably say at this point, that I wouldn't say Keane is outstanding on the ball either, but oddly, I feel more confident when he has it than I did when Jags did. Keane is also deceptively quick, and seems to read the game well. His passing is largely very good, even if he mostly keeps it simple. And honestly, I don't think we've had a defender as good in the air since Gough, maybe Weir.
I just think, if he can continue to build on this current form, grow in confidence and stature and continue to grow under Ancelotti, he has the makings of a very good player for us, which I did not forsee myself thinking in those 1st 18 months after we signed him. Someone rightly pointed out that he did have a terrible foot injury in that 1st year, as well as a concussion, and I think that effected both his confidence and his performances. I'm glad he seems to have moved past that, and just hope he keeps up the good work, including chipping in with the goals like he has done since the restart. He could end up being a very good player for us, and if we do manage to win something under Carlo, Keane would instantly be a hero here too.