After studying the creaky and checked tones, it appears that they are merged. Both have short vowels with an abrupt end (glottal stop).
In Shan language, there is only one tone with an abrupt end (creaky). Shan doesn't have both (creaky) and (checked) like Burmese. Shan just has (creaky) as its only tone with a glottal stop.
So the question is this, are creaky and checked tones merged in Burmese?
If not, then what is the difference in creaky and checked as I have listened to many audio examples online and I am not hearing the difference.
Please don't reply with "You're wrong, there is a difference" unless you can linquistically explain your position with references.
Note: I do believe there was a difference in the past. However, I am just hearing 1) creaky 2) low and 3) high and that is it. So I am wondering how this "checked tone" fits into the "3 tone system"? It would seem to me that the "checked" is merged with the "creaky". There has to be an answer. I have did a lot of research on this and never ending opinions was just too tiring. I just decided to listen to as many audio examples as I could and make my own analysis.