You seem to not understand how the combo of perks worked. It was bugged so you got super energy from grenade hits not kills, you could throw a grenade at the wall and gain super energy, and a sigle kill with grenade gave you instant super. That ment anyone using those 2 pieces of gear together was actually cheating and had an unfair advantage over others. Reguardless if you actually used the combo of perks or not, it was broken and needed to be fixed. Now it works as intended, if you get a grenade kill you gain 7% super energy, not 70%, and it has a 10 second cool down, so no abusing the perks.