Conclusion: no difference
I was worried because it will be used properly in the sample code etc., but it seems that there is no particular difference related to the system.
Since I am using a JIS keyboard, I used to google the single quote input method every time, but I will quit. Thank you for your hard work.
There may be implicit rules, but beginners can spend time just by googled the single quote input method, so why not unify it with the one that is easy to use.