Not saying the champ is op, because she can be beat easy... But taking 2k true damage from a 2 item vayne when you have over 3.4k hp and 260+ armour isn't fun... And she was very behind. While i was super ahead. With any more items i wouldn't of stood a chance.
(Side note this post was just show that vayne true damage is a tad bit high, with just 2 items.) Enjoy the debate tho.