I don't think so... I upped it the other day and killed at least seven players about to capture from a CV, pretty much single-handedly. Spits, F6Fs, an F4U, and two LVTs. It's still fast, agile, still a small target, and still shoots 3 20mm from the nose.
I noticed it might be a little less capable in barrel rolls against an F6F, but it was only a slight difference, not a "big time" difference.
"La probably can't even fight with 190s now". It's not nearly that much worse.