ASG
Led and Genex aren't the only Jetstar pilots posting on this forum.
Many Qantas pilots do want to help Jetstar pilots, even if only because it will help them too. That is healthy.
Many Jetstar pilots want to be helped, even if it will also help Qantas pilots. That is also healthy.
If you really want to be a pilot in an Australian airline, there's a good chance that one day you'll join the Qantas group. If the Group Opportunity Allocations List becomes a reality, you won't get to choose which bit of the company you'll work for. You'll be assigned - maybe even to Jetstar.
My advice; Don't play favourites, listen before speaking and if you do have to speak, ensure what you say isn't petty crap either.