B+ means still just a B but a bit better, B- means good enough to be B but not as good as other B
Also it's not players rating them, it's Gamea staffs' rating. Which is usually done only at a glance of the card, so people here have learned to not pay much attention to them. (Also for some reason they never give an A even when the card is obviously really good)
"Also it's not players rating them, it's Gamea staffs' rating. Which is usually done only at a glance of the card, so people here have learned to not pay much attention to them."
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Exactly this.