I am very surprised this match hasn't been done yet. (I think, the search function brought nothing, so I guess it's safe)
The things they have in common should be quite obvious. Both are starters based on birds, of entirely opposing types. Both can hit each other for super effective hits. One is more defensive and the other more offensive.
Now, against each other, Empoleon despite being a water type is in high type-disadvantage due to its steel type. Also because of its not high enough defenses and its slow speed.
- Which would win in a match?
- Which is more useful?
- Which do you actually preffer, for whichiever reason?
I actually like Empoleon a lot... but Blaziken is still my favorite.