No. Spec uses a different pressure plate and on the stage 2, 3, and 4 they use more agressive puck material. It will definitely feel different than stock on the higher stages. The stage one is made similarly to stock but with higher clamp loads and beefier components, that may be why it feels similar; though honestly with the spec pressure plate it almost certainly has to have a different engagement point.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black