Request Limit for MemoryStoreService Queues?

Hello everyone I have a simple question regarding the request limit for MemoryStoreService Queues. I read the documentation, however I am still unsure about whether each individual queue has a rate limit of 1000 + 100 * (n), or if this limit accounts for every single queue being called by MemoryStoreService.

If this is the rate limit for every single queue being called instead of each individual queue, then can someone please tell me the benefits of using multiple queues from MemoryStoreService, if there are any at all?