If you've ever seen a real Corsair up close, they're massive. P-47 Thunderbolts, too. Compaired to a Corsair, a P-51 or, as you illustrated, a Bf-109 looks tiny.

And the Bf-109 was a fairly small aircraft as well. One of it's issues was as the war went on it was harder to upgrade due to the small airframe. 

Ok, so the Corsair is a big plane. lol that's good to know. 

It really is that the Corsair is a big plane.  The P-47 is very big too. 

Not sure how to get the pic to show up in the post, but an Me-109 is 29' long with a 33' wingspan. A Corsair is 34.5' long with a 41' wingspan.

That's about 5 feet difference in length, and 8 feet in wingspan, or at scale, 1.25" difference in length and 2" in wingspan.

That's about what that looks like in that pic.

I'm adding an image to show the size difference.

I haven't actually measured the airframe, but it seems about right. I did measure the engine, and that was pretty close.

An F4U-1a was 414.15" from the tip of the spinner to the end of the tail, which is about 8.63" at scale. The wingspan was 491.7 inches, or approx 10.24" at scale. Is yours around that size?