“You are too aggressive when resolving issues and I am too soft”
“I am outgoing and you are reserved”
“You eat too much while I eat too little”
“You love sex too much while I am not as active as you”
“You spend too much money on what I termed as not very important while I feel I spend money on the very important things”
“You don’t comport yourself well in the public while I do”
“You lack manners and etiquette in the public while I do not”
“You are too slow in response when we have issues and I love for us to resolve it immediately”
“You do not show enough care and concern for the children, your business seems to be of a greater priority to you”
“You don’t like holding hands in the public and I look forward to it”
“You don’t pay attention to your outlook, and this gets to me every time”

One or more of the above may be applicable to you. Some, you might be able to reconcile, some to an extent, and others, you may not be able to agree on. Whichever applies to you, note that; Irreconcilable differences ought to be viewed from a positive and not from a negative perspective. Instead of seeing it as a problem, see it as a flavor in your relationship.
You need to have an understanding that you have different upbringing (family, culture, religion). If it seems there is nothing about your partner that gets at you, then you ought to check, one of you is not being sincere. The essence of the relationship is not for competition but for completion. You may notice that where you are strong is where your partner is weak and vice versa.
Understanding this will resolve a lot of conflicts before they show up.