Not based on my experience though. I'd not go as far as saying poor but still decent in that area. I know that you're comparing it to CPC2 which is a mid level tire with lots of water grooves in the tread hence quite understandable that the CPC2 would be better in aquaplaning resistance. In contrast the V12E2 has more bigger tread blocks which makes it good at ultimate dry grip which sacrifices a bit of the aquaplaning criteria. Note that aquaplaning is also just 1 criteria in wet performance, which is only evaluating it's behavior when going thru water puddles. There's also grip on wet surface when no water puddles which IMHO the V12E2 is still pretty good. Given the relatively cheap price of the V12E2 even compared to lower mid level tires like CPC2 and Primacy 3ST, I'd still say it's a very good buy for a UHP tire category.