Windstrom is still probably better. Switch the battle positions of your opponents monsters add more utility to the card and it can actually act as an out card as well as a stall card. Negate Attack is better at stalling, but can't be played as an out.
We Konami have a system that knows what decks you play, the decks you are trying to build, how many cards you have, what cards you have and don't have. Because of this, our game arranges the cards in the boxes to get you to spend all of your gems in order to try to get you to spend $. That's why the cards you need or want is at the bottom of the box. Hope this clears your confusion!