The individual components are not the only thing keeping your bicycle from being of the same quality or value as the €1100 example. Your frameset is made from standard hi-ten steel with stamped dropouts. The more expensive Garlatti is built from a higher quality tubing (likely Columbus SL), with forged Campagnolo dropouts. The €1100 bike is higher tier across the board, regardless of the appearance of the lugs or headbadge.