Mayby someone can tell me, how much strenght i need to gather 2 wood by one swing? Or mayby that depends on other stat too...
Well raising your skill and strength will certainly help you pull more wood when lumberjacking in general. You can expect to pull more per swing around when your total (strength + skill) > 120... There are also limitations based on area and the type of wood the area gives. So it is not as straight forward as just rasing your strength.