I would add that there are relevant nuances that were not discussed in the Chess Life article. For instance, the strongest line against the Modern Benoni is the Taimanov Variation, which includes playing f4 before Nf3. If black plays a Nimzo move order, 1 d4 Nf6 2 c4 e6 and white avoids the Nimzo with 3 Nf3, then the f pawn is blocked from playing an early f4, and white cannot play the Taimanov variation. Black can transpose to the Modern Benoni with 3 ... c5, having avoided white's strongest line. The article did not assess the strength of the Modern Benoni conditioned on avoiding the Taimanov line.
This is just one of many examples where assessments of openings are very nuanced by move orders and transpositions, so that one really has to assess an overall systematic repertoire with the web of transpositions possible with the move orders used to get an overall assessment of the strength of the openings.
I would add that there are relevant nuances that were not discussed in the Chess Life article. For instance, the strongest line against the Modern Benoni is the Taimanov Variation, which includes playing f4 before Nf3. If black plays a Nimzo move order, 1 d4 Nf6 2 c4 e6 and white avoids the Nimzo with 3 Nf3, then the f pawn is blocked from playing an early f4, and white cannot play the Taimanov variation. Black can transpose to the Modern Benoni with 3 ... c5, having avoided white's strongest line. The article did not assess the strength of the Modern Benoni conditioned on avoiding the Taimanov line.
This is just one of many examples where assessments of openings are very nuanced by move orders and transpositions, so that one really has to assess an overall systematic repertoire with the web of transpositions possible with the move orders used to get an overall assessment of the strength of the openings.