Only way to judge guys through different generations is to look at genetic structures and weak points. As there is so many modern advantages with drug use.
Phil would not have been competitive in Arnolds days taking arnolds stack.
Then again Arnold would have been bigger but not better taking Phils stack, modern bodybuilders look like shit, they overcome structural faults by building larger muscles related to a greater dependency on steroid and other hormone abuse.
It was never a sport but now its just ridiculous and the IFBB judging supports the ridiculous look with its criteria, Phils just sour grapes, he will go to be a nobody after his days in the sport Arnold legacy speaks for itself.
One things for sure you won't have a phil heath classic 25 years from now, unless its held in Zimbabwe and the prize moneys in local currency.
Arnold has done more for relevance of the sport of bodybuilding than every other bodybuilder combined.