Two questions for you.
1.Does being shiny make any difference in contests? I have a friend with a shiny Lucario that I can't seem to beat. I'm not sure if he's just too good or if that makes a difference.
2.What's better, mega evolution or the appropriate scarf? I thought scarf at first but I'm leaning to mega evolution now.
P.S.
Fonzi? That's amazing, you sir are a scholar and a gentleman.
1. Shininess has no effect in contests. It's all about stat condition, and your luck with appeals.
2. Mega Evolution needs the audience at full excitement in order to use it, so I think it's not really that practical. Also, you have no control over your opponents, therefore luck plays a factor on this as well. So I use scarves.