Originally Posted by
Lysah
Yes, because they are. Extremely low basic attack damage with terrible stat progression. It is very, very, very easy to stomp on both of these heroes if you're not in a public game. They're mostly favored for their ability to solo the long lane and open up the 3 way short lane or roamer, but this is because of leap and windrunner, not because the heroes themselves are particularly good at soloing. In fact, almost every game I play, potm/WR loses their solo long lane. The difference is, losing for them means going 0-0 and not farming all that great. Losing for a hero like SB would mean 0-4 and four levels behind. Furthermore, neither hero really needs farm to do their job, making them another good choice for long solo.
Compare the early game basic damage of these heroes to pretty much any STR hero or nearly any other agility hero for a while and see what you start to notice.