Yes, fighting games are generally better on a keyboard than a controller, assuming you are using a mixbox. A mixbox is a combination between a keyboard and an arcade stick.
On the right of a mixbox, you will find your standard arcade buttons. On the left, however, you will find keyboard keys in WASD format.
Why Mixboxes Are Good
Mixboxes retain most of the benefits of an arcade stick while still allowing you to enjoy the best aspect of keyboards, which is the directional keys.
We are not claiming that directional keys are superior to joysticks or vice versa. We are simply assuming that you like keyboards but want to elevate your game.
A mixbox is the logical upgrade so you do not feel incredibly disoriented. You may want to check out our list of the top mixboxes to see which mixbox you like.