Liverpool wont do any better with a sponsorship. It wont give them millions more than they have now. Of course if someone was to buy them it would be a different story.
As for Barcelona, they were already one of the best teams around before Qatar's sponsorship. In fact, they haven't actually been that good the last two years (on the European front anyway) so you could argue that they've done worse since the QF sponsorship!
Liverpool wont do any better with a sponsorship. It wont give them millions more than they have now. Of course if someone was to buy them it would be a different story.
As for Barcelona, they were already one of the best teams around before Qatar's sponsorship. In fact, they haven't actually been that good the last two years (on the European front anyway) so you could argue that they've done worse since the QF sponsorship!