In my team there is an ex professional cyclist from 80s. Sometimes he come in the Sunday group rides with one of his 80s bikes and he is able to overpass everyb

In my team there is an ex professional cyclist from 80s. Sometimes he come in the Sunday group rides with one of his 80s bikes and he is able to overpass everybody. At the other side, I tried climbing the same hill at same power with my 2017 bike and with my 2023 bike. There was a 4% of difference in the time, probably because better wheels and improved position.