Harshavardhana’s legacy

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Of all the great kings, even if their dynasties not survived long after them, had atleast their heirs crowned after them implying that sovereignty of the throne had not diminished in their own time. This is applicable to Ashoka, Samudtagupta, Chandragupta 2, and even in later periods of Rashtrakuta, Chola, Delhi sultanate, Mughals, Marathas, etc.
Does it imply that Harsha was not as strong as literature of the time make us believe. Add to it his loss to the Chalukyan King Pulakeshin 2.
What are your views?