Not sure if serious 
"1"
Perfectly serious, nothing controversial about it either. Foreman cherry-picked his way through the 90s, facing blown-up light-heavies and cruisers, and guys he outweighed, outsized massively.
Notice that he never faced the big guys and/or big punchers like Lewis, Golota, Bowe, Tucker, Bruno, Ruddock and such. I wonder why, it's pretty obvious.
And yes Tyson would be too fast, strong and good for a slow plodder like Foreman or a featherfisted punching-bag like Ali.
Regarding the 70s being the "golden era", that's propaganda nonsense. The HWs from the 90s, 2000s and even today were and are far superior boxers and athletes, hype doesn't equal abilities.
The 70s or 60s were a crap era, their resumes are awful, everyone gets hyped only because Ali fought in it. Foreman was the only decent HW from that era. Athletes gets better over time, not worse, boxing is no exception, people needs to actually analyze fights and resumes instead of repeating the lies and bullshits of so called historians hyping up the past.
Boxing in America was a domestic sport until the 90s and the fall of the Berlin's Wall, competition was very limited.