Yes, I'd think most here have heard of both brands. Both are well respected, Canadian speaker companies that make solid speakers.
As for sounding the same, that's tough. I think you'd be hard-pressed to find any two speakers that sound exactly the same. Similar? Sure. But the same? Probably not.
More importantly, why do you ask? I see your signature says you already own Axiom's. Are you considering PSB's as replacements?