I wasn't overconfident or anything, I was just happy!
And I didn't battle him with my current team, then he would have won 6-0 for sure!
I battled him with team my friend made for me, so 4-0 for him was possible. ^^
Lol it's fine and also cuz my Gyarados just had a completely advantage after his setup. BTW, I understand you beated Marriland's best 2 Pokemons but there no need to be a little over confident sometimes. :)