Well, I don't know how ZoG determines piece values. If it also values Q=R+B because it does not take synergy into account, it would obviously be wrong in that case, and lucky for the Amazon. But I only tested the Amazon in a direct confrontation with Q + N on 8x8 (which then gave a 50% score). To be sure this is not a fluke I should also do indirect tests, comparing the performance of Q+N against various combinations of material (including pieces with strength between Q and Amazon, and even some stronger than Amazon) with that of an Amazon against that same material combination.
Well, I don't know how ZoG determines piece values. If it also values Q=R+B because it does not take synergy into account, it would obviously be wrong in that case, and lucky for the Amazon. But I only tested the Amazon in a direct confrontation with Q + N on 8x8 (which then gave a 50% score). To be sure this is not a fluke I should also do indirect tests, comparing the performance of Q+N against various combinations of material (including pieces with strength between Q and Amazon, and even some stronger than Amazon) with that of an Amazon against that same material combination.