P-Slin is almost pure Corosolic Acid with a very high percentage of Tannins. It's over-use could possibly result in hypoglycemia, which is why it is a one-dose-a-day product. Anabolic Pump, on the other hand, is formulated for consistent glucose regulation throughout the day.
If you had to choose one or the other, it would depend on your goals.
Overall body recomposition: Anabolic Pump
Pre/Intra/Post-WO Recovery and performance: P-Slin
Keep in mind these categories aren't necessarily mutually exclusive, simply that each product fulfills these respective categories to a greater degree than the other.