Soldato
Our girls are 22 months age difference and they fight like mad. However it got all the sleepless nights, potty training and bed wetting all done over the space of a few years. I thought they would play better but 2 totally different personalities and they clash constantly. I doubt it would be any different if one was a boy!
But at the same time I'm glad we had that short gap, I see folk with kids now and I doubt I could go back to the baby stage again now my 2 and do so much for themselves and sleep all night.
My twins and their older sister have a 13 year gap. Age gaps mean nothing.