Difference between C_TPLM30_05 and C_TPLM30_65

Certified Consultants,

What is the difference between Exams "C_TPLM30_05: SAP Certified Solution Consultant PLM - Maintenance & Repair with SAP ERP 2005" and Exam " C_TPLM30_65: SAP Certified Application Associate - Enterprise Asset Management (Maintenance & Repair) with SAP ERP 6.0 EhP5"

If any consultant has written C_TPLM30_05 instead of C_TPLM30_65 will it be invalid since C_TPLM30_65 is never and based on ERP -EAM unlike C_TPLM30_05 which is based on PLM-ALM..

Will Consultant with C_TPLM30_65 have more prefrence over consultant with C_TPLM30_05 certification...Is SAP consultant with C_TPLM30_05 is not preferred?