so far from my research, Alakazam with the Psycho Cut ability seems like a good candidate to be the most powerful Pokemon in Pokemon Go. Mainly due to the power of the attack and speed (DPS). Seems to do about 30% more damage per second than any other attack. Alakazam is the most evolved version of the Pokemon with this type of attack. I don’t know if it’s HP stands up to other Pokemon, but it’s definitely in the runnings for most powerful, in my opinion.