Here's a comparison:
FSP Hydro PTM X Pro 130mm 1000W:
EVGA G7 1000W:
Both LLC Half-bridge designs. It definitely has a lot of similarities in the layout and component selections, but it's also clear that they didn't just put the same board in a different box. So some changes and customizations were most definitely made for EVGA here.
Of course, this is just looking at pictures and noticing things like the way the designers like to orient the layout a certain way, use those blue potentiometers, how they like to put in the bus bars on the connector boards, the identical looking input connector boards, some strikingly similar heat-sink selections, etc.