Some questions about "full guard", it's mentioned in the Wiki , but I can only seem to get it to occur after an airdash, not on a jump. It also seems that it isn't a "permanent" state until you land, you only get the full guard for a small amount of time before you can be hit again (prior to landing)
I tested this in slow motion with several retries: a high air dash LP, when falling, had Sasquatch do LP (blocked), LK (blocked), MP (hit), MK (hit), HP and HK were too slow for the heights I did it at and I landed first. At a different height/distance, it seemed the mediums could be airblocked afterwards as well.