I already attended a couple of BJJ lessons, I know Judo but didn't use it, but either way those nikkas can't hold me.
The master already admitted I would be difficult to take down in an MMA match because I already have an instinctual control of space and control over unnecessary movements
The key to taking a BJJ nikka down is speed, BJJ also focuses on speed to counter that strike speed. The reality though is an unpredictable art like Capoeira can easily destroy a BJJ nikka in a couple of seconds with the right practitioner. Let me find some vids for you even though I know you will call them fake and say "It won't happen in real life"