Anyone know about frame geometry. I refer to effective top tube.
At my height (5'9") I am recommended the small in Focus Izalco Max and the medium in Scott Foil, but the effective top tubes are near identical . Focus 535mm in small, 551mm in medium. Scott 535mm in small, 550mm in medium.
The Scott even has a longer stem (110mm).
Can someone explain this. To me the effective top tube is how far you have to lean over to reach the bars.