Liverpool manager Brendan Rodgers has admitted summer signing Mario Balotelli will never match Luis Suarez's Anfield impact.
Rodgers backed the Italy striker to shrug off "unfair" criticism and end his six-game Premier League drought however, despite Balotelli missing another glorious chance in Sunday's 3-2 win at QPR.
The Liverpool boss said Balotelli's early Reds career has been blighted by comparisons with Uruguay forward Suarez, who completed a summer transfer to Barcelona.
Liverpool sneaked to victory in west London courtesy of own goals from Caulker and Richard Dunne, plus a deflected effort from Philippe Coutinho.
Eduardo Vargas twice equalised at the death for the impressive hosts, only for Sterling to force Caulker's own goal and keep QPR at the bottom of the Premier League.