Well, 22 victories in a 110 is nothing to sneeze at. I'll give the guy plenty of credit, even if you won't.
It isn't that the P-38 fans expect or demand that everyone agree that the P-38 was the ultimate fighter, that isn't it at all. It's that P-38 fans simply aren't going to agree with anyone who claims the P-38 was a "second rate also ran". It wasn't. And to even attempt to say that it was is to give great discredit to any of the Axis pilots who fell in front of the guns of a P-38.
No exagerration is necessary. The OFFICIAL credits that P-38 pilots scored is more than testament enough to the capability of the plane. Forget the extra claims for Lowell, or anyone else for that matter. What they got officially credited with is more than enough to show the P-38 was an excellent plane when in capable hands.
The fact is, the P-38 was better than average, and better than simply adequate. It handled every task assigned to it well when flown by capable pilots. It was a good fighter, a good ground attack plane, a good fighter/bomber, a good escort fighter, a good interceptor, and even a good recon plane. Was it the very best at any of those tasks? Maybe, it was, maybe it wasn't, probably not. But it was more than capable, and it acquitted itself quite well facing ANY piston engine prop driven plane any of the enemy could put up against it. Not bad for a plane designed in 1937, especially considering it was never designed for most tasks it was assigned, actual development ceased in 1943 for the most part, not to mention fixes were available for most of the perceived faults but never installed, and the best prototype (the P-38K in April 1943) never saw production.