Complex sentence: For example, his criticism of the Forty-seven Ronin is based on his opinion that they should not have waited a year to avenge their lord, but should have attempted revenge immediately, even though an immediate attempt almost certainly would have failed.
Split into simpler sentences: For example, his criticism of the Forty-seven Ronin is based on his opinion that they should not have waited a year to avenge their lord. Instead, Tsunetomo says that the Ronin should have attempted revenge immediately, even though an immediate attempt almost certainly would have failed.