If there is a significant rise by hashrate of some pool, wouldn't that have also some short-term impact on the relative number of blocks that this pool solves?  The difficulty drives the complexity of finding a solution, and if there was only a single miner, this would dictate the rate of blocks solved by that miner.  If there are 2 miners, there is some competition between them, as each block can be solved only once, so some of the work expended by one of the miners would be lost if the other miner solves that particular block.  Intuitively it is expected that the instantaneous relative hash rate would have some impact on the rate of individual solutions - why is that incorrect?

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