LJ is too unpredictable for me. I rewrote my tracking display to show points/hr and it was way under 3k. This was over a two day test period where I didn't chop anything higher than ash. If one of my three magic trees had changed to frostwood, I'd probably have returned a much higher result.
As it is, c2's crab fisher returns more Per hour per account than LJ for me. SOS farmer returns are better still, but requires manual assist. BODs are by far the best -if- you already have a huge store of ingots to burn.
Across three accounts, I'm expecting to hit about 18k per hour, based on my current test results. That's six per hour, per account.