Question about Ping?

Now, earlier in the game I was playing and someone said their ping went up to 80 and cost them the 1v1. I normally play at 80. I live in a very rural area and it's hard to get good internet. I managed to get myself att internet, which was hard enough since they're trying to cancel all their internet in my town. Is that a bad ping to play at? I do fine, really. But everyone keeps telling me "If you had lower ping you'd be so much better than you already are". Does having 40-60 ping compared to 80 really make such a huge difference? I do well, and usually carry in all of my games. I don't see why my ping is making me a worse player right now.
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