Complex sentence: The early part of his run was overshadowed by the memory of Fox and some Canadians criticized him as a copycat, but he persevered and eventually won recognition in his own right for his efforts.
Split into simpler sentences: The early part of his run was overshadowed by the memory of Fox and some Canadians criticized him as a copycat. Despite this, he persevered and as he progressed beyond Fox's stopping point, he eventually won recognition in his own right for his efforts.