Wow. Thats actually really surprising... then why does the G14 feel like such a pig compared to the K4? Even without gondolas?
It doesn't, to me. Feels a little more nimble (and this may just be placebo effect).
The only major differences show up over 15-20k.
If you've got those alt monkey, fight-avoiding, 30k-flying, lancasters, though, the K-4 is the way to go.
EDIT: Sorry for the side-track. I had intended to draw a parallel to the P-47s by showing how they're all pretty darned similar to each other, and only really close down to the stall, low and slow, with full flaps out, will you notice TOO much difference. Similar to the G14/K4. I just ran out of time typing it and forgot to include it.