Of course, Japan was far more advanced than China. As I pointed out, "China was a backwards, feudal country dominated by incompetent, self-serving war lords who couldn't/wouldn't address invasion by a country a fraction their size". And for the record, Japan watched European colonialism and wanted it on it; the "Asia for Asians" was a nifty slogan that just didn't quite mean what it implied. SE Asia was a cinch for Japan because the French and British colonizers had their hands full elsewhere.
You misinterpreted or I misstated that last bit "we tend to believe others think, rationalize, and honor words like we do". We have a bad habit of believing that others (especially Asians) think and rationalize the way we do; they often don't. We tend to agree in words to treaties, objectives, etc believing that the opposition will abide by those words. Often they are broken before the ink is dry; the Chinese specifically are notorious for telling someone what they want to hear with a smile, and do whatever they want - never intending to honor their "commitment".