Sparc T4 will have better single-thread performance :important for large databases and ERP applications.

Source :: http://www.pcworld.idg.com.au/article/370535/oracle_halve_core_count_next_sparc_processor/

The Sparc T4 will have better single-thread performance instead, which is important for large databases and ERP applications.

Chips with high core counts tend to be better at some workloads than others. They are good at jobs that can be broken into many smaller parts, such as processing high volumes of Web requests and online transactions, but fare worse at big databases and ERP applications, where single-thread performance is important