Its not a ping thing, I get this against a lvl 2 Bot all the time.
First: a hit does not break his uninterruptible stance, often it takes many hits and if I hit in twice in a combo he never stops the combo til its completed.
Second: if I try to Guard-break and he does so at the same time its never a canceled Guardbreak its just him doing his full thing that should not be possible even with equal timing and no ping its like he has some sort of higher priority.
Third: He is completely immune to Valkyries Shield tackle, its not interrupting him, its not breaking his uninterruptible stance, he can Guard-break, hit or simply stand there without any consequences.
Fourth, his running to heavy attack hits first, don't know how and why but its impossible to be faster than that attack.