Kevin over at Chainsaw Repair did some testing and posted the results. Pretty amazing what that little 346xp can do (and he claims his ported one is a slow one). We are going to do more testing at my GTG with the Dan Henry ported 346 wearing 24" bar.
http://chainsawrepair.createaforum.com/saws-in-action/mini-gtg-for-saw-and-chain-comparisons/
http://chainsawrepair.createaforum.com/saws-in-action/mini-gtg-for-saw-and-chain-comparisons/