League of Legends (LoL) Question: Karthus and Soraka

Karthus and Soraka
So, a lot of people think of
Soraka as the #1 counter to
Karthus. Constantly in solo queue I see teammates pick
Soraka because there is a
Karthus on the other team. The common claim is that
Soraka's ultimate negates
Karthus's ultimate, and vice versa. If they negate eachother, why don't people consider
Karthus as a "counter"
Soraka








So you see, they kind of serve opposite functions. While
Plus, as throatslasher mentioned, Soraka gets even more useful when she's in the same fight as Karth. She has another huge heal to save people with, her passive is an MR aura (which really helps with protecting your carries since they won't have built much MR) and she even has a silence. A silenced Karthus can't cast
These are all reasons Soraka is a good reactionary pick to a Karthus. What does Karthus have to counter Soraka? You're hardly going to pick your mid laner so you can use their ultimate to counter the enemy team's support's ult. In close-quarters, Karthus has no real advantage over Soraka, so he's still at a disadvantage. Plus if you try to make any plays with your ult in bot lane, Soraka will have both
If the damage isn't 100% kill.
But soraka kinda sucks now anyways
Soraka passive and soraka silence ****s karthus up.
And I agree with that statement, because if she's forced to use her ultimate, she can't be clutch with it when she wants to be.
I rarely see either of them anymore, quite honestly.