In reality the DS5000 should be faster for most workloads. Analyze the response time,

SPC-1 states that all IO need to respond within 30ms.

At "100%" load the DS5300 responds in 12.5 ms for reads and 2.06 ms for writes.

The Netapp figures are 32.7 ms for reads and 13.04 ms for writes.

In reality you can only drive the Netapp at 75% IOPS load rate to achive similar usable response times.