It should be true if the Arial examples were provided with comparable weights. That is, assuming, that the two fonts were weighted similarly from their base.
The Helvetica is actually slightly thinner in the Mattel example.
This misled me on the Mattel example. Could this have been a mistake be the quiz designers?
For Mattel I looked at the space between the T and the E. One of them was really close and didn't look as nice, so I chose the other.