Yasuo's (W) windwall being able to block Vel'Koz's (W) Void Rift

I find this immeasurably weird and down right odd that 's w can be blocked entirely by wind wall when the ability is a rift under the ground. It'd be like blocking half of 's W when its coming out of the ground. Now if someone can explain to me how a Wind wall can block a underground explosive blast I'm by all means curious because I'm mystified at how it can defy magic and physics in the game by utterly stopping the attack half way or down right entirely. Now I'm a huge fan of all Void characters but this just doesn't make any sense how can block an ability like that Riot if you read this can you please explain this out to me. You've made Vel'Koz an interesting champ with a mix of unique angle control but then when your fighting Yasuo that trying to figure out how to force him into desirable angles is gone. Just my 2 cents on this feel free to agree or disagree.