Well, the thing is Apple don't have as much tine as Google to revise over their systems and products, they only get a year for the next release and finish one product off and jump to the next one and will tweak it if they find a problem on the iOS which is major not minor ones such as accent. Unlike Android & Google who release a new product with the same OS and take a while to patch up that OS. Apple always think about the year ahead and Siri isn't that old, I agree it does need some work, but in my opinion Siri is better than Google no critisim.
Many Thanks,
ASSASINATERZ