No, the poor Americans will be confused by the inversion.

First removing 1/3 (4 rounds) from a 12 round magazine leaving 2/3 (8 rounds) left … then switching to talking about how a 1/3 full magazine with its 4 rounds has more rounds left than the 1/4 mag with 3 rounds.

They won’t be able to catch on, and are likely to respond with something along the lines of “But the one you took 1/3 out of has just 8 rounds left, and the 1/4 one has 9 rounds left, which is more. The 1/4 one is more.”