100%
Pochettino is a good manager. He might even be very good and he certainly took us up a level but Klopp is much better. Simple fact.
Psychologically stronger, able to inject the right mentality into his players and fearless in how he treats them. He is the boss, simple.
Put even more succinctly Klopp is right up there with the very best managers of the last decade.
Pochettino isn't in the same league, and even with the same resources I don't believe would have done as well.
I can agree with a lot of this but think you are being harsh on Poch .
Poch did finish above Klopp every season until Klopp's board backed him (Coutinho money).
We can't totally equalise resources but Poch did vastly improve our full backs, Dembele, Alli, a raw Kane.
With regard to purchases, Klopp seemed to have the benefit of a committee insisting on the more astute buys; Poch has, so far, been found to be wanting in this regard. But again, with time and being injury free, could he have got Lo Celso and N'Dombele to work.
Winning against us in Madrid was Klopp's first 'success' in GB (if measured purely by trophies). He'd already lost a Europa final, a semi against a relegation threatened Villa , a League Cup final v City and finished below Poch every year.
However, his record in Germany is evidence we have for him being better. He is clearly a great of modern times.
Poch tried to inject us with a great mentality and came a long way. Luck plays a part in finals and semis. Klopp lost a lot too. Where Klopp was streets ahead mentally I think, comes from reading about Liverpool players at the airport returning home from losing to Madrid. Apparently he was getting them in a positive frame of mind to get back next year and win the thing.
Poch went away for a few weeks straight after our defeat in Madrid, maybe something to do with his emotional personality, but it can't be discounted that Klopp knew he had been backed, knew his team could come again; Poch knew the opposite. What would Klopp's reaction have been to a defeat and knowing he wasn't going to be backed.