GOULI you are totally wrong.
The whole load of the helicopter is suspended from the rotor head by the outer casing of the gearbox. This design was hailed as a huge advance that saved significant amounts of weight...
The MGB of the EC225, like the others in the Super Puma family, uses 3 suspension bars which transfer the whole load of the helicopter from the transmission deck directly to the top of the MGB casing. Sikorsky use the method you have described, which is why their MGBs are so heavy.
The attached illustration is from the EC225 Technical Data Manual.