No it's not. It's like the relationship between the ML-20 and the Katyusha.
those axis players
i remember a year ago when i asked for calliope , they said :
''no no you already have the m8 scott''
(where in the pudding the scott performs like a katyusha or walking stuka ??? ) are u f#$%g serious ?
but hey there we go pershing and calliope are out!!