Nios II Embedded Design Suite and Processor

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if you are using VIP Suite, the blocks can have run-time control of parameters. these parameters are controlled over an Avalon-MemoryMapped bus. you can write an HDL state machine to load the registers over Avalon-MM, or you could use a Nios II processor.

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I am new with the Nios II processor. I intend to use it to implement it in a SOPC . It's for a controller in power electronic applications. I would like to know why the Nios II could be a good option over other soft-cores for power electronics ?

Thanks