Fighter Rek'Sai is getting a nerf... but what about THIS Rek'Sai?

My match history here is un-deniable proof that AD-Assassin needs a harder nerf than fighter .

Here are a few simplified reasons other than that match history:

1. With Ad Assassin is a viable item, or has been for 90% of my games (Sometimes you just have to sell it later).
2. can do 1.2k+ true damage late game with a burster Assassin build.

A few things Assassin 'Sai can do:

1. Kill a fully built in his Ulti
2. Out burst a burst mage mid ( counters HARD)
3. Accidentally kill a when taunted
4. Tired of ? You can kill her with your E to avoid that passive.

Any thoughts, or questions are welcome. I'm here to talk it out and hopefully help find a proper solution.