IMHO, an event that occurs in 1 game out of 50 can be safely ignored. Because out of those 50 games, with more or less evenly matched opponents, at least in 30 of them the outcome will be determined by some details of the layout that do not depend on the player's skill, but are merely created by the whim of the generator. How red-rush is worse than the rest in this regard is not very clear. A correctly sized Griffin Conservatory on the path or a conveniently located Dragon Utopia with control significantly outweigh the effect of a red-rush.