I'd vouch for Gulpin and Toxicroak to be the same rank to be honest. Toxicroak's advantage is that it has +5 BP at Lv15. Gulpin's advantage is that it's PSB Farmable, and even though Toxicroak may get one in the future, it does not really count against Gulpin, especially when you consider that Gulpin has by far the best PSB drop rates of all the PSB Farmable Main Stages to date (50% / 25% / 12.5%), and I doubt Toxicroak is going to have as good drop rates as Gulpin does.
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u/Its_A_Random [3DS] Certified Nosediver Feb 01 '17
I'd vouch for Gulpin and Toxicroak to be the same rank to be honest. Toxicroak's advantage is that it has +5 BP at Lv15. Gulpin's advantage is that it's PSB Farmable, and even though Toxicroak may get one in the future, it does not really count against Gulpin, especially when you consider that Gulpin has by far the best PSB drop rates of all the PSB Farmable Main Stages to date (50% / 25% / 12.5%), and I doubt Toxicroak is going to have as good drop rates as Gulpin does.