Kivilev climbed with the best at the Dauphine. Just like O'Connor.
O'Connor's 4th place at the 2021 Tour de France came thanks to a successful breakaway as well. And weak opponents like Kelderman and Lutsenko.
O,Connor also has a 4th in the Giro. Granted he was well behind Pogacar, but had he raced smarter, he could have been on the podium in an average GC field.
Also, Primos isn’t Lance Armstrong. Yes he was clinically enhanced, but he was a much more dominant force and more aggressive rider in his day compared to the rest of the peloton.
Pereiro is a much closer example, and he won the TDF that year.