They are both very different blends, in terms of ingredients and taste.
MB Club Blend is Virginia/Cavendish blend with a distinct palate of fresh hay, cinnamon, cardamon.
PS LBF is a Virginia/Perique blend with a Cavendish center and very close to Escudo.
The only thing they have in common is the coin form.
I love Escudo/LBF for being supreme Va/Per blends - sweet, spicy, decent nic. But Club Blend is one of my all-time favorites and there isn't really anything else on the market that comes close, except for MB Dark Twist. Club Blend has a very unique taste.