"Ostravian dialect" is that what you call Silesian language in Czechia?
And reading collections of old Silesian folklore from the villages, I noticed the rustic language having some extra features no longer present in Ostrava as well.
But the staccato accent is pretty much the same, yes. As is the preserved pronunciation of hard "y" which died out in standard Czech some 600 years ago.
An interesting exception is the region around Ostrava, where "y" remained a clearly different vowel in pronunciation until today.