No one can argue with what you're saying sir, that is to say there really is no comparison between Dallas and Arnold, for Arnold (and all bodybuilders from his era) did not have bloated stomachs. Like I said, it's really an open and shut case and you win each and every time when that type of comparison is made.
However when I wrote my post above, I only had in mind today's bodybuilders and not yesteryears to compare with Dallas. In today's era, the one bodybuilder that remains faithful (in the stomach department) to yesteryears bodybuilders would be our very own Priest, Lee priest that is. Maybe there are others but I can only think of Lee as having a midsection that somewhat rivals that of yesteryears' Champions.
And you're correct again re the PEDs, as yesteryears' gear pales into insignificance when compared with today's sheer number of the PEDs that are on offer to anyone who dares to indulge.