So this is a lista of starters we will see witch has the highest stats example Blaziken has the highest attack but Swampert has the highest special attack (Not true) and to see with has the most highest starts (Sorry if its confusing) let's Beguin
Highest HP
Swampert

Highest Attack
Blaziken

Highest defence
Torterra

Highest Speed
Sceptile

Highest Sp Attack
Empoleon

Highest Sp Defence
Blastoise

Highest stat total
Swampert

So everything say's Swampert is the best but
Blaziken
Torterra
Sceptile
Empoleon
Blastoise
Are the best choices o más like
Gen 1 Blastoise
Gen 2 Typhlosion
Gen 3 Swampert
Gen 4 Empoleon (Cause I think Empoleon has higher stats than torterra)
Hope tu liked it I mite update it for the worst starters