Aussie light infantry in need of buf

Why are aussies advanced infantry with worse survivabilty than jägers? Also Jäger with shreks are effective vs armor and mediate vs infantry, whilst assius pretty much are mediate to effective against infantry and no anti-armor capabilites. I just had a game were I lost a total of 9 units, problaby more than 3 prior games combines. Just because the assie bg is so weak. Thoughts?