1st link isn’t working (yet).
As for the 2nd vid, I didn’t see anything from either to make them look hard to beat. The K groover seems largely dependant on fierces and roundhouses, no real poke strings, mix ups. I would do the following ;
Get up close, and press your light attacks slowly. If it hits, link into a combo. If he blocks or JDs, continue in order to see if you can land a counter hit to keep him from pressing buttons. If he stops, thats where you start throwing. Or use some guard crush strings to force him to look for a way out.
He also seemed very reliant on jumping. Do anti airs that are JD safe. I noticed that he never really walked in with most of his characters … especially Mai. The Blanka player should’ve just spammed jump straight up fierce.
As for the Aztec guy its a bit of the same. He has a better understanding of pokes from what I can tell. He doesn’t seem to be too good at punishing mistakes with the best option. Like with Blanka, he has a few openings to do cr mk xx super. But he would do jump in, cr rh. Went for cross up super instead (Which I thought was pretty obvious).
I would take more risks against this guy.