Quality is all well and good when you have a proper backup which we don't. We need 2 LWs, Bastos/Vargas and a prospect at a stretch, Hazard next year maybe. We can have one star, Aguero and if we play our cards right 2 quality players in Vidal and Vargas. I know we have enough strikers but that illustrates my point. If Aguero gets injured we have ADP etc to cover him, with Hazard we'd have Pepe and that's a Chiementi level of backup,it may as well be a log.
Aguero is a psychological and financial necessity as much as a sporting one. Hazard matters fuck all compared to Aguero in terms of Marketing and PR. We have to consider all of these factors, besides I rate Aguero higher as a player too.