Stipe is a top 5-6 HW of all time. His resume on paper is very good. He's a good guy, tough guy but it's true, he never beat an all time great in their prime.
Wins over Reem, AA, JDS, DC, and green Ngannou are still good wins but it isn't the same as beating them at their best. It's not like Fedor beating Nog, Mirko and AA in their 20s. It's not like DC beating prime Gus, prime Rumble, prime Bigfoot and prime Barnett. Or even Jones beating trt vitor, 2014 DC or prime Glover.
Stipe is still a great HW but the truth will always be the truth.