Speaking of Lothar's, just went lothar's Tiny and totally destroyed a game. PA ended up being the reason we won, but me having an effective 20:1 KDA certainly helped keep our team alive long enough for PA to finally farm items after 60 minutes to crit people to death.
I can't tell you how many wards/dust they bought. None of it saved them. Leshrac tried to buy a gem, he lost it in seconds. Way too easy for a team to commit to a kill on one person and remove the gem from play. You simply can't ward everywhere, and dust doesn't stop ganks, it only helps chase. I MIGHT have sold it for mjoll after I was at lothar/manta/buriza/scepter/treads/BKB, but the game was over, and even still, it's hard for me to justify Mjoll when windwalk is as strong as it is right now.
You can cry about low skill pub trash games all you want, but there just really is no true counter for someone who knows how to actually use shadow blade. Between the invisibility, the speed, and the backstab, it's just too much for an ability you can spam nonstop. People pretend like blink is a good item for Tiny, 2150g for zero stats and something you can only use to get next to an enemy. Windwalk accomplishes the same thing when you're moving at 522, but also gives you a free auto attack that will hit for Lion ult in damage, and will come off cooldown just in time for you to run away after you get your free kill. Meanwhile, the shadow blade actually gives you helpful stats while it's off cooldown.
You can watch the replay if you want, they had the advantage on us for a very long time. I'm just exceptionally opportunistic and able to pick and choose when and where I strike. I try not to actually believe that I'm somehow a unique player when it comes to this item, but it really is just that easy to smash anybody with. I don't care who they are, skill is not a factor when you're dead before you can move. The only way to actually stop windwalk is to be way ahead already in terms of raw 5v5 team power, in which case, no single item on any hero is very likely to swing the game around. If you can huddle up in a clump of 5 and team push with true sight and end the game, then yes, shadow blade won't appear exceptionally strong. I will continue to argue that in this situation, however, you were winning so hard it didn't matter.