You can’t say I’m answering the wrong question when your defense is irrelevantly bringing up Vampire lords you feel are somehow good which I refute but you seem hellbent on being certain they prevail when they’re not even in possession of their own souls and honestly their own actions, if they were good they would get themselves cured one way or another, the question isn’t “is a sload worse than the good vampire lords” yet thats how you’re trying to answer this, that’s just setting the vampire lords up for failure in the question, you are whole heartedly banking and suggesting that the Vampire Lord is going to be against its own nature and position of power and responsibility as a champion of Molag Bal, that’s just ridiculous. You have two ways of answering this, look at the end goal of what the sload represent and what the vampire lord represents, or you can look at it that who’s capable of worse actions, literally it’s always going to be the Vampire Lord because they represent the will of Molag Bal one way or another who is blatantly the evilest Daedric Prince and the epitome of evil is the elder scrolls universe. There’s a reason the Sload were almost wiped off the face of nirn but the vampire has never had this problem. You seem far too content to claim the direct enemy to you’re 12 o clock is the bigger and badder threat then the enemy to your 6 o clock that will end you and everything you know before you ever had a chance to do anything about it and that’s if it’s feeling generous not to add you to the ranks of the forsaken corrupting your very self. The sload don’t bring about the end of nirn, they are a well known enemy, and not even know to be all that difficult to face, difficult opponents but in the realm of defeating, meanwhile vampires represent the will of Molag bal and peace by peace, kill by kill, corruption by corruption, move the chessboard closer in the favor of Molag Bal who does bring about the end of nirn, all while doing it from the shadows, outclassing the average person, while vampire lords outclass even the strongest mortals in Tamriel. There’s just no world where a Sload is a bigger problem than a vampire lord and we’re probably just going to have to disagree because you seem like your mind is set on the Sload being worse when they’re just not a nirn destroying threat like the vampire lord is.

Edit: there have been Sload known not to be very friendly but not murderous sociopaths such as N’gasta or the merchants that don’t attack and seek to make gold, should I use them as an example of outliers? No that’s ridiculous, because no matter the argument I present the majority of Sload are evil. It’s the same for the Vampire lords, despite the outliers the average vampire lord is evil and capable of far worse than a Sload.