1) If, and I'm not convinced it has, Negredo's workrate has dropped off in his last 5 games, might I suggest it's due to us playing 10 game sin the last month, as opposed to 10 games being 2.5 months worth of football as is the norm. Potentially the drop in workrate isn't due to Negredo not beign a player who puts in the effort, but is more due to the short recovery time between games?
2) Just because Negredo isn't as fast as Aguero doesn't mean he's not fast himself. You are wrong when you say he isn't quick, in fact I've been surprised at quite how quick Negredo actually is. I don't really understand the term "heavy striker".
3) Yes, that's true. However it's also not even remotely what you previously said. You said if we put Negredo in the Spurs team he'd perform as badly as Soldado was/is doing. That's simply not true. AVB played a lone striker system and asked the striker to lead the line, hold up the ball, link play, etc. Negredo does ALL of these things better than Soldado does and as such your assertion is demonstratively wrong.
4) No, it IS TRUE. The reason it IS TRUE is simple, I looked it up. Your insistance on just considering league games is the issue here. I said Dzeko had started 10 away games, Negredo had started 9 away games, that is a fact. At no point did I say I was limiting my stats to league games, why would I? Do cup games not count? Your assertion that Dzeko would score 4 more goals if he'd been given the extra pitch time is pure speculation
5) You're right, I do think Dzeko is ok, but not great, and I'm not alone in that assessment. My opinions on Pellegrini aren't really relevant here, but I'd challenge you to find too many posts where I've been enthusing about him. I like his style of play (more so than I did Mancini's) and think he's making more good decisions than bad, but he's still made errors in his time at City. Negredo is a better player than I thought he was going to be, and with 15 goals by early January in his debut season I don't think I'm overrating him at all. No-one is saying Negredo is on a par with Cavani, Ibrahimovic or Falcao, but neither is Dzeko. Negredo cost us just shy of £20m, Cavani went to PSG for over twice that. Value for money wise I think we got the better deal. As for why othe clubs didn't want him, well Barca went for Neymar, and Real spent £100m on Bale, they had their targets. Atletico Madrid probably didn't have the money, they are more a selling club than buying, and could get Villa for far cheaper. Bayern probably wanted Dzeko as he has Bundesliga experience, and they hope they can make him the striker he was 3 years ago, not the striker he is now. Asking why Negredo didn't suceed at Real Madrid is harsh in the extreme, he was much younger, he developed later in life as a top striker, and he was competing against the best players money can buy. Real aren't Barca, they don't really bring too many youth products through, they spend £80m on Ronaldo, or £100m on Bale instead. Of course Negredo has flaws, they just aren't as many, or as detrimental to his contribution to City as Dzeko's are. Negredo's right foot isn't brilliant for example. However, when measured up against Dzeko then Negredo has far more going for him.
6) I agree, the booing (or, more accurately, the lack thereof) is not really relevant here. I'm sure Dzeko is frustrated, and annoyed, about his limited gametime, but ultimately there's only one person who can do anything abotu that, and it's Edin himself. He has it within him to demonstrate to Pellegrini that he deserves more gametime, and as a City fan I'd be delighted if he stepped up, played great football and forced Pellegrini to start him more often, a striker playing very well for City can only be beneficial for us and our chances of winning. The fact it's now January and he finds himself as the 3rd striker and not getting the time on the pitch he craves is down to his poor displays and nothing else. Pellegrini is a football manager, why would he decide to simply leave a player out with no reason? He selects the team he feels gives us the best chance to win and, more often than not, that team doesn't include Dzeko. You'll find the vast majority of City fans are in agreement.