条件形 => Conditional form N4
的 => about (change noun into na-adjective or adverb) N3
を中心に => focused on; centered on~ N2
…のも無理 (は) ない => It's natural for... N3
Evaluate
のも無理もない => (to be) natural,(to be) understandable N3
Evaluate
[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
とはくらべ[物「もの」]にならない => It's no match for A N1
Comparison/ Exchange