Some people are and I don't know why. I've been using the 1x since they were released and the APX2s since there release before them and I can say the boot fits the same to me. The only thing I can think of is the 1x tongue is slightly thinner maybe that's why people think it has more volume but the boot has the same fit. my speed plates even fit the same in the apx2 and 1x and have the same feel. I'm not sure if the people that think the fit is different from the APX2 actually used both skates or just tried them on in the store I'm not sure what that's about.