Being realistic, every club has a pecking order for its strikers:
Chelsea - Diego Costa, Pedro, Batshuayi (no fourth forward - Hazard is classed as a midfielder).
Spurs - Harry Kane, Vincent Jansen (Son is classed as a midfielder but I think he is a forward)
Liverpool - Firmino, Sturridge, Origi, (Edited to include Mane who is injured, Ings injured, Coutinho classed as a midfielder but like Son I think he is a forward)
Man City - Aguero, Jesus, Iheanacho, Nolito, Sterling
Man Utd - Ibrahimovic (now injured), Rashford, Martial, Rashford, Rooney
Arsenal - Sanchez, Walcott, Giroud, Welbeck, Perez.
In Sanchez we have a striker that will get 20+ goals per season. Surprisingly when you look at Chelsea they don't have much in the way of options and Spurs have even less. Yet both clubs are at the top of the league fighting for the title. Also in Spurs' case the drop in quality from Kane to Jansen is massive, we have a similar drop in quality, from Sanchez to the rest of our forwards.
If Perez is not going to get played (technically best of the rest) the burden falls on Sanchez who as we all see for ourselves tends to try "too hard" which affects his performances. Funnily enough I started this thread to highlight the pecking order and quality of our strikers and to compare it to the teams we are fighting, but I am so surprised by Spurs and Chelsea's forwards that I am stumped on how to continue my post
When you compare our strikers to the other teams its only really City and Man U that have better forwards, in my opinion, very surprising.