I think the main difference and reason why Liverpool and City are top whilst we are fourth is City's top 3 league scorers (Toure-20, Dzeko-16, Aguero-17) and Liverpool's top 3 (Gerrard-13, Sturridge-20, Suarez-31) whilst our top three are (Ramsey-9, Giroud-16, Podolski-8. If we keep Ramsey fit and add another striker with Giroud, someone who can score 20+ league goals then attacking wise we should be top 2 next season.