Originally Posted by
Octane
What was the difference in performance between a BF-109 and the Merlin engined Buchon?
I think that's a bit like "how long's a piece of string?".
Wiki appears to suggest the Buchon's slightly faster than a 109G, but doesn't say at what altitude, and has a substantially lower service ceiling.
It's also apparently heavier which, considering the DB605 has an even greater capacity than a Griffon, seems odd.
On balance, I think I'll stick with my first comment.