You're comparing two different bike.
the difference between my 520 Day One and 725 Croix de Fer You're comparing two different bike.
the difference between my 520 Day One and 725 Croix de Fer
Yes. Ba dum - tish
Not only on top of what you already elaborated, but the wheelset, the cranks, the tyres, the pressure, the saddle, the riding position, etc.
Even just a 10psi difference transform the bike into something else.
@russmeyer started
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You're comparing two different bike.