Complex sentence: The Life of Tecumseh in particular has been faulted as "A biography that succeeds better as fiction" which "in its interpretative zeal... strays from... the historical record to the point of being suspect".
Split into simpler sentences: The Life of Tecumseh in particular has been faulted as "A biography that succeeds better as fiction". It has been described as "in its interpretative zeal... strays from... the historical record to the point of being suspect".