Borderlands 3 - DX11 - 1080p
No card can even reach 120FPS average at 1080p -- not even NVIDIA's TITAN RTX which costs $2499. However, if you're looking at maxing out the details in Borderlands 3 and wanting to hit 60FPS then you'll find a home with AMD's new Radeon RX 5700 series graphics cards.
On the NVIDIA side of the fence, you'll be OK with the standard GeForce RTX 2060 with 65FPS average, but the new RTX 2060 SUPER and its faster GDDR6 offers up 73FPS average. Comparing this to the Radeon RX 570u0 with 65FPS average, and the faster RX 5700 XT with 80FPS average.
AMD even beats the GeForce RTX 2070 here at 1080p with 80FPS over 77FPS, but loses to the RTX 2070 SUPER with 85FPS average.