this is hard question... because i dont know nothing anout roland but...
OSA missile speed is aprox 2.5 mach and roland missile speed around 1.5 ! this is big point ! and maybe osa target calculator parameters is so faster than roland.. and the other side ... OSA SOC have longest detect range than roland at the end ... OSA armed with 6 missiles silo and roland i think that maximum overload is 4 missiles as mdore@ wrote : these 2 using one method ! CLOS !