The difference between where Liverpool was when he took over and where they are now is massive. Even though they haven't won anything yet, at least they saw progress being made season by season.
And for the Valverde supporters with a stick up their ass, who compare trophies, the quality of the teams when both took over their respective clubs is incomparable. Liverpool's defensive line consisted of Mignolet, Clyne, Lovren, Sakho and Alberto fucking Moreno. It's was utter trash. Compare that to Ter Stegen, Umtiti, Pique and Alba and it's another world altogether. Then you see the attack where players like Benteke, Origi and sick note Sturridge were mainstream appearances and it's a no fucking contest with Messi, Dembele, and even this version of Suarez. Hell, Messi alone was/is worth much more than their whole team at that time.
All of the above and I didn't even mention the stature and wealth of each club.
Valverde's supporters are the most delusional and dishonest bunch of bastards I have ever seen.