BASE STATSSome of the following information is based off of Squirtle's "official" profile and other books from Pokemon, while the rest I have gathered from playing Pokemon. Some information may be based off of the manga version as well if stated other wise.
SP. ATK: 50
SP. DEF: 64
A Base Stat is the unofficial name for the general outline of statistics for a specific Pokemon species. Base stats usually give a general idea of the strengths and weaknesses a specific Pokemon will have. Pokemon often focus on some stats more than others. Base Stats range from 1 - 255
➾ Squirtle is one of four Pokemon that has a total of 314 for their base stat. This means that it averages at 52.33 for each stat, which is semi-low.
TYPICAL WATER STATSTo show a comparison on how Squirtle is to other water type Pokemon, here is an overall average of Base Stat for Water-Type Pokemon who are fully evolved:
SP. ATK: 72.50
SP. DEF: 69.00
Based on this, you can see that Squirtle is low in every category. But that is definitely understandable because Squirtle is a starter Pokemon. It would be more accurate to compare Blastoise with these stats to see Squirtle's future potential!