Single post in Your Guide to 90%+ Breeding Pairs

The Red Gigaremo wording is not great. It does 'double your chances' but not by affecting your matchup percentage in any way. That is set based on the factors listed in this Guide. What it really does is halve the number of interactions you make before it checks to see if an egg was bred, from 64 interactions down to 32. So the Base matchup % you see when you First put two pokes in the Daycare together is Their percentage.