I prefer to think of him as more of a tragic figure later in life, or simply meteoric - in much the same way that Demetrios Polierketes was. Neither really achieved much for their own causes in the long run, and both died in a fashion that you'd be hardpressed to call anything but ignamonious, but both were clearly brilliant commanders.

Pyrrhos himself though isn't given enough credit for his 'Pyrrhic victories.' Most every other time the legion fought the phalanx, the latter was trounced, as the Makedonian and overwhelmingly larger Seleukid armies were. Pyrrhos on the other hand, was able to secure several victories over the legion, with a phalanx whose equipment and training was largely poor (though the Molossian, Chaonian, and Trespotian were nothing short of excellent), and fewer and more poorly armored elephants then Antiochos lost with at Magnesia.