Fergie is better than Pep, no doubt about it. But give Pep another 10-20 years, he may get much closer in terms of overall achievements. But he will never match Fergie legacy, because he never manage to build his own team/club/empire from scratch.
Klopp though, what he had done for Liverpool is admirable. But no, he is not better than Pep. No matter how much money Pep has spent, he never really “failed” or had any “bad” season, or as bad as the one Liverpool is having this season. Also, Pep’s brand of football has been one of the best I’ve ever seen, money alone doesn’t buy that. I mean, Mourinho has spent a lot too, look how shite his football was, disregard the result.