What started these "battles"?

Mod note: I've edited your post for being pretty much all personal opinion (stated as facts, in regards to the Poser vs DS debates), and for being completely off topic. 

 

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!