Can gays do marriage better than straights?

I don't know what percentages are going to be or what they are in states and countries that recognize gay marriage. What I do know is that I have been with my partner for 10 years and going strong. One of our older friends is a WW2 vet who met his partner while serving in the Army in 1944. They are still together. Yeah, gays and lesbians can stick together in loving monogamous relationships. But, we have our fair share of break ups, just like everyone else.