Yes, we are. The difference he makes is more than just his goalscoring and general haring about like a lunatic to win the ball back.
He is a far better target man than Ade, because Carlos actually holds onto the ball when it comes up to him. This gives everyone else time to move up in support.
With Adebayor, he flicks, dribbles, far too often gives the ball away straight away. He also very often fails to challenge for the header at all, leaving the defender free to make a good headed clearance. I know the midfield were poor-ish tonight but I honestly believe this is number one reason we get strung out across the pitch. The players are just starting to move up and they have to go on the back foot again.
Balotelli is absolutely not a target man. Llorente or Dzeko are absolutely essential in my book.