Size matters...
... when you are flying in front of judges. Let's be totally honest here. Judges are not supposed to look at the contestant, or the planes and make any kind of assumption on their abilities. But, if someone shows up with a 2X2 plane done up to the 9's with a lot of color and flash, they will get better scores than someone with a Kaos even if they fly identical flights. I'm not trying to put blame on judges here, only on human nature. It's very difficult for someone to give comparable scores to these two planes. The guy with the smaller plane is going to have to really fly great, to compete against the larger, prettier plane swinging a huge prop. I watched Chip Hyde flop a stall turn flying a borrowed plane from Dino Perra at a contest in Lancaster, California about 15 years ago and receive a 9.5 and a 10! Brownie points matter whether you get them from who you are, or the equipment you fly.
But, I digress, a larger plane presents itself better than a smaller one and is much easier to see. The larger plane also handles wind better, and flies smoother. Anyone who says a 40 size plane can compete against a 2X2 is forgetting wind and rough air. And what kind of weather typically occurs at meets? Windy.
John