It's not specifically about the raw numbers. (I'd have Walker back in a heartbeat as he's better than both Aurier & Doherty. I also think he's widened his role under Pep, plays a completly different function from the same position, he covers their CB's so often he's last man, but when he's advanced he takes the ball inside, City use their AM's for width, all be it with lots of interchanging). It's about whether he's an "upgrade" on Aurier or not, Spurs fanbase has their new scapegoat and will not have it that the two are of a comparable level (taking into account individual characteristics and how they have been asked to specifically play in their teams).
I like BOTH, I think BOTH are on a par, Spurs scapegoat fanbase thinks he's an "upgrade". That's all. It's just fucking weird that for even daring to suggest this creates so much angst amongst them, you would had thought having two comparable players fighting for spot and/or providing cover for a position was a positive for the team. Now watch the negatives reign on down this post LOL.
IMO Walker has regressed massively each season after leaving us. He's probably Man City's weakest link in the back 5 atm. Costs them in almost every big game in the CL - made costly brainfarts against Liverpool, us and Lyon. Pretty meh in attack as well.