The AA Champ from 1972, Tourischeva, was Olympic, World, and European AA Champ (only Larissa Latynina, Vera Caslavska, Tourischeva, Elena Shushunova, and Lilia Podkopayeva have accompliished this; and to be fair to non-Europeans, Simone Biles has accomplished the USA equivalent to this, and if the extremely stupid score truncating hadn't reared its ugly head, Nastia Liukin also would have accomplished this). Olga, despite her incredible fame and her guts, never won a major title such as those I described above. But at the 1972 Olympics when it came time for Event Finals, she was the star, wining 2 Golds and 1 Silver, just narrowly beating out East Germany's Karin Janz who won 2 Golds and 1 Bronze. Tourischeva got 1 Silver and 1 Bronze.
Better? No, the sport has evolved and changed. But just because Comaneci did not have springs underneath the floor exercise when she was competing, does not mean she was inferior.
Nadia took the standard of the day and pushed it significantly further, and did so with incredible technical precision.
Edited to add: It's the first line of your post that I take most issue with. While technology, nutrition, and financial resources have changed all sports significantly, it does not make today's athletes "better". It means they have had more opportunities to improve.
The IOC stripped Andreea of her gold medal because she tested positive for a banned substance (a cold medicine, not exactly something that would help one's performance.) The gold then went to the athlete who originally finished in second place.
Curious fact: In Tokyo 2020, Brazilians discovered that Daiane dos Santos doesn't have an Olympic Medal when Rebeca Andrade became the first Brazilian for win a medal in Women's Gymnastics in the Olympics.
Olga won many medals, including several gold, at the '72 and '76 Olympics; however, this quiz is specifically for the all around competition. Though Olga was expected to take gold in the all around in '72, mistakes during the competition meant she did not medal at all.
Here's Comaneci's floor routine from 1976. Which is amazing and impressive.
But then watch Biles from 2016, and your jaw will drop.
There's simply no comparison.
Nadia took the standard of the day and pushed it significantly further, and did so with incredible technical precision.
Edited to add: It's the first line of your post that I take most issue with. While technology, nutrition, and financial resources have changed all sports significantly, it does not make today's athletes "better". It means they have had more opportunities to improve.
84 Alternate Olympics - Olga Mostepanova