Pep was right when he said that if he had a season like this for Barca, Bayern or Madrid, he'd be fired. At these clubs, you are a failure even with a narrow, "unlucky" miss. I think worst of them is Bayern, to be honest. They have almost 0 respect for the Bundesliga title, everything is solely judged on CL win or no win at this point, which is ludicrous. Ancelotti was being hyped up until their Madrid match, and after an unlucky loss, immediately, he was seen as worse than Pep by many Bayern fans. How crazy is that? CL is a cup tourney, details matter. Pep's Bayern was also very close to beating Atletico Madrid. So your entire season is judged on some fine details of a given match.
My point is, whilst I am a fan of Klopp and Benitez (not such a fan of Pochettino), it's patently wrong to say that they have it hard. These guys are praised for their achievements. People are understanding and give them a lot more time. Pep or Mourinho get called a failure after 1 season of not winning CL or league title. They are under a lot more pressure. Pochettino did well finishing 2nd but all these years, his teams have been sucking in Europe badly. Nobody seemingly is too critical of him for that. Would anybody be more understanding and forgiving if Klopp, Benitez or Pochettino went to Bayern and didn't win everything in sight in their first season? No, there would be reports leaking that these are small club coaches, big fishes in a small pond, not ready for top clubs etc.
They may do well at Bayern, to be fair, but this is yet to be seen. For now, they are praised for what they are achieving, without all that pressure from media and fans.