
You can compare sizes (brands, models) with stack and reach. It does not make a difference if the top tube is more or less sloped.
With traditional measurements (seat tube length, top tube length and head tube length) you need to plan with different angles of top tube sloping.
With your body measurements, a bike fitting sheet (made with your measurements) or the measurements of your current bicycle I can suggest best frame size for you.
Rudi
customer service
Casati Cicli
customer service: phone/WhatsApp/Signal: +39 340 140 44 91
frame production: 20876 Ornago (MB)
cycling experience: Liguria, 18036 San Biagio della Cima (IM)
distribution Taiwan - DEMAPE INTERNATIONAL TRADING Co.,LTD - beyondthecliff6@gmail.com - phone +886 933294897