I tend not to pay too much attention to who has a longer reach than who unless there's a massive disparity between the two fighters. It's very rarely the deciding factor in cases like this anyway. Far more important are speed, timing, placement etc. Wlad's jab is great not because he has a substantial reach advantage over his opponents but because his snap and timing are so good, and he understands exactly how to use it in order to facilitate his gameplan whilst neutralising his opponent's. It's rare to see a heavyweight so effectively shut down his opponents time after time like Wlad does, and the jab is the cornerstone of that. Lennox has a wicked jab as well, but it was a heavier concussive punch used to set up combinations. Wlad's is a bit more versatile. In terms of who has the better one I suppose that comes down to a matter of what you look for in the punch. I think Wlad's jab is overall a more useful punch, and does more things for him than Lennox's does. Lennox could really shake guys down to their bootstraps when he committed to his though.