Klopp is obviously a very good manager, but I think you‘re spot on here.Klopp needs to manage a team where he is under constant pressure to win things before he can be called an incredible manager.
At Dortmund and Liverpool he doesn't experience that, he's always been the underdog and their fans accept that.
The plucky underdog thing is his entire schtick - and their fans, and the media, have bought into this entirely. So he operates under virtually no pressure.
Can‘t be sure how he‘d do with a club like us, working under constant pressure to win trophies or be dubbed a failure. But personally, I don‘t think he‘d last 5 minutes.