First off, assists are not the same as goals. If one goes by the assists stats from last season, Gerrard was
the most creative player in the league, more creative than Silva and Suarez (according to
http://www.myfootballfacts.com/Premier_League_Combined_2013-14.html). And if one judges the creativity of attacking palyers mainly by the number of their assists, then Iniesta is an average player creativity wise, much worse than Gerrard. Gerrard and Rooney got many assists because they take well set pieces. Other than that they are not particularly creative. To say that Rooney is a world class creator of goals would be laughable. Rickie fecking Lambert assisted as many goals as Rooney.
Second, Rooney has scored 35 goals over the last two seasons - as many as Toure and Vidal. That's not a world class return. Costa for instance has scored 56 and outscored Rooney in both seasons, not just the last one. There are many attacking players who have been better than Rooney over the last 2 seasons: Ronaldo, Messi, Zlatan, Costa, Falcao, Müller, Cavani, Lewandowski, Suarez, Aguero, Robben, Ribery, Neymar, Bale, Benzema, Van Persie. Most of those players comfortably outscored Rooney or were much more creative than him. One could make the case about other players who don't have the reputation of being world class, e.g. Sturridge or even Dzeko (41 goals from just 54 starts for City). I haven't mentioned a player from Seria A, say from Juve, because I don't watch it but there could be other forwards who have done at least as well as Rooney
over the last 2 seasons, for instance Hazard - another player who would be a much more attractive signing than Rooney, or Mata. Or Higuain. Don't know. But to think that Rooney was one of the best 10 attacking players over the last 2 seasons would be pure fanboism.
The fanboys argument may come sometimes from fans of other players but also from fans who don't bye the hype.
Edit: Just checked Higuains stats: he contributed 62 goals over the last two seasons (goals + assists).
Benzema: 78 goals! (44 goals and 34 assists)
Mandzukic: 48 (only goals)
Lewandowski: 64 (only goals)