yeah.. i think title fights need to be more rounds than other because they mean more than others and if your the top 2 fighters you should be able to go more than anyone else
Keep them at 12 rounds.
1. It's healthier for the boxers.
2. If it's a boring fight...it will end earlier! (Think about some of Don Kings endless shows).
3. The boxers can keep a higher workrate at 12 rounds - better fights.