It is your perception that Gujarat riots are "brushed" off. Its not and the continue to have a high media focus. Just as an example, here is a outlookindia magazine list that has a dedicated Gujarat riots section
Go through the various links to see the progress of what has happened till now. There are other many media outlets that have a dedicated focus on Gujarat riots update as well as many NGOs dedicated specially for rehabilitating and getting justice for the riot affected.
outlookindia.com : Gujarat: Riots and Politics
outlookindia.com : Gujarat 2002 probe
But again, you are comparing two different things. The mumbai incident involved foreign nationals coming in India and they even killed 40+ muslims. A similar situation would be if Hindu extremist groups went blasting with AK47s in Lahore or Karachi.
What is comparable is the TTP doing a wave of terrorist attacks in Pakistan. Despite their actions, they are after all Pakistani citizens killing other Pakistani citizens.
Just like the the riots accused in Gujarat are Indian citizens killing their fellow Indian citizens.