First pilot on my block with a confirmed kill

If you're an aviation aficionado and haven't stopped by the Hush-Kit site, you really should. They always have articles that are at bare minimum interesting and entertaining if not also very informative. They self-describe themselves a kind of "Top Gear for aviation" and it's not a bad comparison. 

Recently, they put up an article about the top scoring WWII aircraft by kill count on the site and they do so to help illustrate that the Supermarine Spitfire is likely the top scoring aircraft type, instead of the P-51 Mustang. Their reasoning being that it served nearly the duration of the entire war, in ever increasing numbers, and served in every theater. Here's the kill counts they came up with along with their sources (methods are described on the article):

I don't doubt their numbers for the Spitfire kills being fairly accurate, but I'm curious as to the other allied aircraft numbers. As with all things historical, there will be many different accounts, records, missing records, and misinformation to deal with when doing such research, but I found their numbers interesting to compare to the numbers found on the Warbirds and Airshows site (even though the Warbird's site's is meant to be strictly American pilots, not overall victories by type). 

Interesting to note, is the (apparent) debunking of the P-38 and it's "most Japanese kills" claim. However, the real interesting bit is the discrepancy of the tallying of the P-51 compared to Hush-Kit's and I would certainly think the accounting here is likely more accurate than at Hush Kit (no offense to them). Although, the numbers for the F6F Hellcat is much closer when comparing the two.

Also to note, is that this second tally is meant to be only American victories, and doesn't take into account all other allied nations flying the same aircraft, which I suspect would be no small contribution to swing the numbers even more in the P-51's favor. Although, I wonder if the (albeit minuscule) victories by Americans in Spitfires was accounted into the Husk-Kit numbers as well. 

Is the Mustang still king of the skies during WWII?  Or is it really the Spitfire?  I dunno and I'm too lazy to do all of the research myself. 

Lastly, as a fun thought, the Spitfire was there for nearly the entire war is true, but that just seems to make the Hellcat's numbers even that more impressive, as it was only in the war for a couple of years. 

If you ask me, the real lesson here is: Fly Navy!