Lumberjack stats make him seem like a Mini Pekka replacement. You get the health and DPS of Mini Pekka but with added rage on death.
My deck is based around versatile giant pushes, so Log will work against me there. Might be useful in my deck but not sure what I'd swap out.
His stats aren't even near minipekka. Closer to Knight (less hp, more damage). So he doesn't fit in as a minipekka replacement.