If he never played Gamma, he never fought a Nightmare. And neither have you from the sound of it.
Sounds to me the imposter here is you considering you don't know LEEJG. Find another playground to play on, mine if full.
Clearly you didn't look to much to those stats.
I'm fighting in from the rim to the core and battling YGs now.
Also, the point disparity between defense & attacking speaks volumes.