mike you may take all the exception you wish to but please do it in a manner that comes off as a little less sounding like "which school boy can pee the fartherest". Reserve that type of posting for AR!
To continue your argument wouldn't you need to prove that the 45-70 is not capable of pierceing the brain of a sleeping croc,hippo?
The fact is 45s asked a question about DG/ Marlin 45-70. Not about what caliber best to hunt elephants with. DG includes lion, leopard, croc, buffalo,etc as well as elephant. A Marlin 1895 with the proper bullets will kill all of them neatly IMHO with the exception of an elephant.