I'll explain it.
That should makes things clear for you
The next day is the day after the patch.
Before the patch both sides had their advantages.
Ego 1600+ players had 9 Perks.
Ego <1600 players had cheap salvage matrix costs.
After the patch:
Ego <1600 players have cheap salvage matrix costs & 9 perks.
Ego 1600+ still have quadruple salvage matrix costs and 9 perks.
At the 2nd day you're stuck with your disadvantages.
The other players now enjoy the advantages they had PLUS your former advantages.