You won 15 straight matches where you had a lopsided result and I'd say most likely had some favourable match ups, now complain about having some harder match ups? Right.....
Also you last fight against "butholis" was one GL each and the loss to the guy with 3 GLs, you didn't even try.
You have also beaten guys previously who had a GL advantage. This shows that matching you guys together was definitely fair.
GP and GLs don't decide the match. Some players have terrible mods, don't know counters or have silly strategies that open themselves up to being beaten. It seems you are at a stage where the guys you meet with a GL advantage actually know a little and it's tougher. If you lose all, you'll drop and find some more balanced matches. Just remember there were people who went constantly 0-3 or 1-2 while you were going 3-0. Your overall winning percentage is high and therefore have had a good influx of crystals. Enjoy the tougher matches, see what you need to expand on, then do it.