You can find the full top 10 supercomputer list at top500.org. Below is a chart comparing the IBM Sequoia with the Fujitsu K Computer;
IBM Sequoia
Fujitsu K Computer
Performance
16.32 petaflops
10.51 petaflops
Architecture
45nm IBM Power
45nm SPARC64 VIIIfx
Cores
1,572,864
705,024...