The feud of Gottfried von Strassburg and Wolfram von Eschenbach

In his famous literary excursus, Gottfried von Strassburg indirectly refers to his rival Wolfram von Eschenbach as “some friend of the hare” and as an “inventor of wild tales.” Wolfram, in turn, responds to this attack by alluding to “vacillation” and to “a dull mirror or a blind man’s dream.” Why might such a feud have arisen between the poets of the two most sublime works of the courtly age? In other words, what are the specific differences in personal temperament, in social status, in style, in philosophy, in message etc. that might have contributed to this feud?