1. Instead of Mallu cooking Baingan ka bartha, Ashu will cook to satisy Mallu's cravings...

2. Ashu will paint Mallu's toenails instead on Nidhi's...legitimate yaar...Mallu can't reach over her tummy!

3. HE will play the violin for the baby instead of for Mallika!

( okay I know that is a guitar...what to do...or maybe Ashu took guitar lessons too)
4. Ashu will give Mallu her injections himself instead of trusting Nidhi..

5. Mallu will be well-groomed instead of looking like a looney tune!

6. DB will have a slanging match with Nidhi instead of Ashutosh!

There, I have six differences for you...feel free to add more!