Flushed water heater yesterday got a lot of sputtering right after that and today hot water is not flowing with the same pressure as before
You shouldn't have shut off the cold water feed. that helps nothing and may reduce the flushing efficiency.  But you did, so most likely you ended up draining all hot water piping in the rest of the house.  You will have to run every hot water faucet/valve individually until you've cleared all the air out of every pipe.    

It wouldn't hurt to re-flush, but this time leave the cold inlet open. This might push some bubbles out of the tank itself.   

BTW, there's no reason to turn off the pilot either, so long as you keep the feed open so the tank itself is always full.